{"id":2009,"date":"2026-11-06T08:00:00","date_gmt":"2026-11-06T08:00:00","guid":{"rendered":"https:\/\/prennox.com\/?p=2009"},"modified":"2026-10-16T03:57:14","modified_gmt":"2026-10-16T03:57:14","slug":"can-chinh-chi-loi-hinh-tam-giac","status":"publish","type":"post","link":"https:\/\/prennox.com\/vi\/triangular-core-limb-alignment\/","title":{"rendered":"C\u0103n ch\u1ec9nh chi l\u00f5i h\u00ecnh tam gi\u00e1c: D\u1eef li\u1ec7u ki\u1ec3m tra ba chi\u1ec1u"},"content":{"rendered":"\n<div class=\"wp-block-rank-math-toc-block\" id=\"rank-math-toc\"><h2>Table of Contents<\/h2><nav><ul><li class=\"\"><a href=\"#section-1\">Triangular Core Limb Alignment: The Decision to Resolve<\/a><\/li><li class=\"\"><a href=\"#section-2\">Three-Dimensional Limb Layout and the Adjacent Interface<\/a><\/li><li class=\"\"><a href=\"#section-3\">Material and Functional Evidence<\/a><\/li><li class=\"\"><a href=\"#section-4\">Comparing the Available Supply Approaches<\/a><\/li><li class=\"\"><a href=\"#section-5\">Inspection in the Delivered Condition<\/a><\/li><li class=\"\"><a href=\"#section-6\">A Worked Example and Its Limits<\/a><\/li><li class=\"\"><a href=\"#section-7\">Changes, Exceptions and Release Decisions<\/a><\/li><li class=\"\"><a href=\"#section-8\">Preparing a Technical Inquiry<\/a><\/li><li class=\"\"><a href=\"#section-9\">Frequently Asked Questions<\/a><\/li><\/ul><\/nav><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">A dimension becomes useful when the reader knows its datum, tolerance and purpose. For the specified triangular wound core, an apparently small mismatch at three-dimensional limb layout can prevent assembly even while the overall envelope looks correct. The practical question behind triangular core limb alignment is which dimensions must be controlled together, and which inspection state represents the part that will actually be installed.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">A 3D triangular wound core uses a three-dimensional arrangement of wound magnetic limbs. The arrangement changes winding access, positioning and assembly interfaces compared with a conventional flat stacked core. This article concentrates on triangular core limb alignment, with practical checks for engineering, purchasing and incoming inspection.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"section-1\">Triangular Core Limb Alignment: The Decision to Resolve<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Start the triangular core limb alignment review with the limiting interface: three-dimensional limb layout. Mark its reference surfaces on the controlled drawing, then identify where limb spacing and coil axis position are measured. The receiving plant should be able to reproduce the check without interpreting an unscaled photograph. If the measuring point becomes inaccessible after assembly, arrange a recorded check before that stage closes.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">For triangular core limb alignment, A triangular layout should be described using a three-dimensional drawing. Two-dimensional height and width cannot show the full relationship between limb axes, coil clearances and support points.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">When evaluating triangular core limb alignment, remember that A transport fixture can become a useful incoming-inspection reference if its supports are documented. Its temporary fasteners still need a removal or final-installation decision.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full\"><img fetchpriority=\"high\" decoding=\"async\" width=\"800\" height=\"800\" src=\"https:\/\/prennox.com\/wp-content\/uploads\/2026\/09\/3D_Triangular_CRGO_Wound_Core-01.jpg\" alt=\"Three-dimensional triangular wound transformer core\" class=\"wp-image-1389\" srcset=\"https:\/\/prennox.com\/wp-content\/uploads\/2026\/09\/3D_Triangular_CRGO_Wound_Core-01.jpg 800w, https:\/\/prennox.com\/wp-content\/uploads\/2026\/09\/3D_Triangular_CRGO_Wound_Core-01-300x300.jpg 300w, https:\/\/prennox.com\/wp-content\/uploads\/2026\/09\/3D_Triangular_CRGO_Wound_Core-01-150x150.jpg 150w, https:\/\/prennox.com\/wp-content\/uploads\/2026\/09\/3D_Triangular_CRGO_Wound_Core-01-768x768.jpg 768w, https:\/\/prennox.com\/wp-content\/uploads\/2026\/09\/3D_Triangular_CRGO_Wound_Core-01-600x600.jpg 600w, https:\/\/prennox.com\/wp-content\/uploads\/2026\/09\/3D_Triangular_CRGO_Wound_Core-01-100x100.jpg 100w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"section-2\">Three-Dimensional Limb Layout and the Adjacent Interface<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">The triangular core limb alignment requirement sits between three-dimensional limb layout and coil insertion route. Put both sides of that relationship in the review package. The supplier needs the current mating-part information, while the buyer needs the actual delivered condition. A requirement that is measured before controlled winding may not describe the state that reaches final assembly. Confirm the point at which the interface is accepted and who owns any operation after it.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">In a triangular core limb alignment review, photographs help communicate orientation but should supplement the controlled assembly drawing. They are particularly useful for marking which supports may carry the load during lifting.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">For triangular core limb alignment, distinguish the physical feature from the property being evaluated. Limb spacing is one part of the evidence; it should be read with overall transport envelope and the approved product configuration. If a receiving check cannot reproduce the supplier\u2019s measurement condition, resolve the method before shipment. That is preferable to discovering at receipt that both parties have valid measurements of different states.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"section-3\">Material and Functional Evidence<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Tolerance chains deserve more attention than isolated nominal values. The relationship between three-dimensional limb layout and coil insertion route includes the variation of both mating parts, any insulation or gasket, and the assembly method. For triangular core limb alignment, review the least favorable approved combination rather than assuming all parts arrive at nominal size. A trial fit should use representative production parts and preserve the identities of both sides of the interface.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">One constraint on triangular core limb alignment is that wound steel is sensitive to mechanical stress introduced after processing. Avoid bending the magnetic assembly to compensate for a support frame that does not fit.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">For triangular core limb alignment, heat treatment must be compatible with the selected strip and manufacturing process. A generic statement that a core is annealed does not identify the cycle or the performance acceptance basis.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The recurring risk in this part of the triangular core limb alignment review is unequal coil positioning. Ask which design input or manufacturing step controls it and which result would show that control has been effective. Keep the answer specific to triangular wound core. A generic statement about quality management does not identify the material condition, fixture or production-stage evidence needed for this particular interface.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"section-4\">Comparing the Available Supply Approaches<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Treat a sample that fits as evidence about that sample. It does not prove that every allowed tolerance combination will fit. In a triangular core limb alignment trial, record the actual measured values, orientation and fixture, then compare them with the proposed acceptance range. If the supplier solves a mismatch by force or unrecorded rework, pause the approval until the cause and the revised dimensional basis are understood.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Approach<\/th><th>What must be confirmed<\/th><th>What it does not establish<\/th><\/tr><\/thead><tbody><tr><td>Triangular Wound Configuration<\/td><td>Approved interfaces, delivered state and required evidence<\/td><td>Automatic equivalence to another configuration<\/td><\/tr><tr><td>Planar Laminated Arrangement<\/td><td>Any changed design or qualification work<\/td><td>An improvement in every operating condition<\/td><\/tr><tr><td>Coil Assembly At The Receiving Factory<\/td><td>Tasks retained by the buyer and final inspection scope<\/td><td>A complete installed-performance guarantee<\/td><\/tr><tr><td>Prearranged Core And Support Package<\/td><td>Packing, assembly and acceptance responsibilities<\/td><td>The same total cost as a different supply boundary<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Use the table to align the supply boundary for triangular core limb alignment, then ask suppliers to state deviations explicitly. The alternatives shown are review routes, not a claim that every route is available for every Prennox product. Confirm the actual offered configuration and the customer\u2019s assembly capability before assigning a preference. If an alternative changes base support, carry that difference into the drawing and acceptance schedule.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"section-5\">Inspection in the Delivered Condition<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">When evaluating triangular core limb alignment, remember that the coil manufacturing route must be compatible with the core supply form. Agree how windings are installed and what equipment is needed before treating the core as a direct substitute for a planar stack.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">In a triangular core limb alignment review, the overall height includes more than the steel itself when lifting eyes, restraint parts or packaging are present. Confirm the actual route into the factory and the available crane headroom.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full\"><img decoding=\"async\" width=\"800\" height=\"800\" src=\"https:\/\/prennox.com\/wp-content\/uploads\/2026\/09\/3D_Triangular_CRGO_Wound_Core-02.jpg\" alt=\"Triangular wound core showing the three-dimensional magnetic assembly\" class=\"wp-image-1390\" srcset=\"https:\/\/prennox.com\/wp-content\/uploads\/2026\/09\/3D_Triangular_CRGO_Wound_Core-02.jpg 800w, https:\/\/prennox.com\/wp-content\/uploads\/2026\/09\/3D_Triangular_CRGO_Wound_Core-02-300x300.jpg 300w, https:\/\/prennox.com\/wp-content\/uploads\/2026\/09\/3D_Triangular_CRGO_Wound_Core-02-150x150.jpg 150w, https:\/\/prennox.com\/wp-content\/uploads\/2026\/09\/3D_Triangular_CRGO_Wound_Core-02-768x768.jpg 768w, https:\/\/prennox.com\/wp-content\/uploads\/2026\/09\/3D_Triangular_CRGO_Wound_Core-02-600x600.jpg 600w, https:\/\/prennox.com\/wp-content\/uploads\/2026\/09\/3D_Triangular_CRGO_Wound_Core-02-100x100.jpg 100w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">For triangular core limb alignment, build the receiving record around item identity, requirement, method, condition, result and disposition. Add coil axis position where it addresses the identified risk. Preserve the as-received state when damage during coil insertion is suspected, especially if further cutting, winding or assembly would conceal the evidence. A photograph can support the record, but it should not replace the agreed functional inspection.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"section-6\">A Worked Example and Its Limits<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Illustrative section calculation: take a geometric limb section of 82 mm \u00d7 103 mm, or 8,446 mm\u00b2. With an assumed stacking factor of 0.95, the screening net iron area is 8,023.7 mm\u00b2. These are invented teaching inputs, not Prennox dimensions or a design approval. For triangular core limb alignment, the calculation shows why an outer measurement and an effective magnetic section answer different questions. The actual designer must use the approved steel, stacking basis, turns, voltage and frequency before drawing a flux-density conclusion.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The calculation supports one limited part of triangular core limb alignment. It does not close the review of coil insertion route, base support or the final transformer duty. Replace every teaching input with the approved project value before using the result in a purchasing decision. Where the underlying relationship is only a screening approximation, record that scope so a preliminary estimate is not later reused as a production acceptance limit.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">A change to limb spacing can propagate into coil insertion route, base support and the inspection fixture. Review the affected assembly before approving a revised drawing. Keep the original requirement, proposed value and technical disposition visible so the next batch is built to the agreed configuration. For triangular core limb alignment, a handwritten workshop correction is useful investigation evidence but should not become the only manufacturing instruction.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"section-7\">Changes, Exceptions and Release Decisions<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">One constraint on triangular core limb alignment is that do not infer complete-transformer efficiency from a core construction label. Compare guaranteed losses and other project requirements for the actual transformer being quoted.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The useful outcome is a drawing that both supplier and buyer can inspect in the same way. Define the measurement state, accessible datums, limits and records for triangular core limb alignment; then close any mating-part assumptions before quantity production. That reduces argument at receipt and gives engineering a clear basis for deciding whether a measured deviation affects fit or requires further evaluation.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">If triangular core limb alignment remains unresolved, define the next evidence needed instead of broadening the acceptance wording. That may be a revised interface drawing, a representative process trial, a grade-specific statement or a result at the agreed test condition. Identify the affected batch and prevent an unresolved assumption from being copied into a repeat order. Once the evidence is available, record the technical disposition and the effective revision for production and receipt.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"section-8\">Preparing a Technical Inquiry<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">A useful triangular core limb alignment inquiry includes the exact product, quantity, approved drawing or grade, intended use and final supply state. Add requirements for limb spacing, coil axis position and the evidence that addresses stress from improvised restraints. Define packing and destination information, and identify which assembly or processing stages remain with your plant. If an input is unknown, flag it as a question rather than presenting an invented value as an approved specification.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">For the product\u2019s stated supply scope, review <a href=\"https:\/\/prennox.com\/product\/3d-triangular-crgo-wound-transformer-core\/\">3D Triangular CRGO Wound Transformer Core<\/a>. The related <a href=\"https:\/\/prennox.com\/transformer-core-drawing-requirements\/\">Transformer Core Drawing Requirements Before Ordering<\/a> provides broader context. The <a href=\"https:\/\/webstore.iec.ch\/en\/publication\/63884\" target=\"_blank\" rel=\"noopener\">IEC magnetic-material specifications<\/a> is an independent reference for the relevant technical subject. Its public overview does not certify this product or provide all project acceptance limits; identify the applicable specification and edition in the order.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Send Prennox your drawing, application conditions and triangular core limb alignment questions through the <a href=\"https:\/\/prennox.com\/contact\/\">technical inquiry page<\/a> or the form below. Request confirmation of the offered configuration, required evidence and any proposed deviations before placing the order. This gives both teams a clear basis for a comparable quotation and an inspectable delivery.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"section-9\">Frequently Asked Questions<\/h2>\n\n\n<div id=\"rank-math-faq\" class=\"rank-math-block\">\n<div class=\"rank-math-list \">\n<div id=\"faq-0-0\" class=\"rank-math-list-item\">\n<h3 class=\"rank-math-question \">What information starts a triangular core limb alignment review?<\/h3>\n<div class=\"rank-math-answer \">\n\n<p>Start with the approved triangular wound core configuration, the relevant drawing revision and the condition being evaluated. Identify three-dimensional limb layout and limb spacing explicitly. Add the actual manufacturing or installation conditions so the supplier can distinguish confirmed requirements from assumptions.<\/p>\n\n<\/div>\n<\/div>\n<div id=\"faq-0-1\" class=\"rank-math-list-item\">\n<h3 class=\"rank-math-question \">Can triangular core limb alignment be approved from a photograph?<\/h3>\n<div class=\"rank-math-answer \">\n\n<p>A photograph can show shape, orientation or visible damage. It cannot establish the complete magnetic, dielectric, thermal or mechanical performance of triangular wound core. Use the agreed dimensional record, material identity and functional evidence for the requirement being accepted.<\/p>\n\n<\/div>\n<\/div>\n<div id=\"faq-0-2\" class=\"rank-math-list-item\">\n<h3 class=\"rank-math-question \">Which record is most useful for triangular core limb alignment?<\/h3>\n<div class=\"rank-math-answer \">\n\n<p>The useful record connects the delivered item to the specific requirement. Include its batch or serial identity, drawing or grade revision, test or measurement condition and result. For this product, keep evidence concerning limb spacing visible alongside any source-material certificate.<\/p>\n\n<\/div>\n<\/div>\n<div id=\"faq-0-3\" class=\"rank-math-list-item\">\n<h3 class=\"rank-math-question \">When does a triangular wound core change need a new trial?<\/h3>\n<div class=\"rank-math-answer \">\n\n<p>Review a change when it affects three-dimensional limb layout, the supplied material, the processing route or the previous acceptance basis. The extent of requalification depends on the affected function. A matching product name or nominal dimension does not by itself close that review.<\/p>\n\n<\/div>\n<\/div>\n<div id=\"faq-0-4\" class=\"rank-math-list-item\">\n<h3 class=\"rank-math-question \">What should a quotation for triangular core limb alignment include?<\/h3>\n<div class=\"rank-math-answer \">\n\n<p>Ask for the exact configuration, quantity, supply boundary, approved dimensions or performance, required documents, packing and delivery destination. State any unresolved value as a technical query. Prennox can review the listed product and project requirements before confirming the actual offered scope.<\/p>\n\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n\n<div class='fluentform ff-default fluentform_wrapper_3 ffs_default_wrap'><form data-form_id=\"3\" id=\"fluentform_3\" class=\"frm-fluent-form fluent_form_3 ff-el-form-top ff_form_instance_3_1 ff-form-loading ffs_default\" data-form_instance=\"ff_form_instance_3_1\" method=\"POST\" ><fieldset  style=\"border: none!important;margin: 0!important;padding: 0!important;background-color: transparent!important;box-shadow: none!important;outline: none!important; min-inline-size: 100%;\">\n                    <legend class=\"ff_screen_reader_title\" style=\"display: block; margin: 0!important;padding: 0!important;height: 0!important;text-indent: -999999px;width: 0!important;overflow:hidden;\">\u5b98\u7f51\u8be2\u76d8\u8868\u5355<\/legend>        <div\n                style=\"display: none!important; position: absolute!important; transform: 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>Colombia<\/option><option value='KM' >Comoros<\/option><option value='CR' >Costa Rica<\/option><option value='HR' >Croatia<\/option><option value='CU' >Cuba<\/option><option value='CW' >Cura\u00e7ao<\/option><option value='AE' >C\u00e1c Ti\u1ec3u v\u01b0\u01a1ng qu\u1ed1c \u1ea2 R\u1eadp Th\u1ed1ng nh\u1ea5t<\/option><option value='UM' >C\u00e1c \u0111\u1ea3o nh\u1ecf l\u1ebb xa x\u00f4i c\u1ee7a Hoa K\u1ef3 (M\u1ef9)<\/option><option value='CG' >C\u1ed9ng h\u00f2a Congo (Brazzaville)<\/option><option value='DO' >C\u1ed9ng h\u00f2a Dominica<\/option><option value='CD' >C\u1ed9ng h\u00f2a D\u00e2n ch\u1ee7 Congo (Kinshasa)<\/option><option value='CZ' >C\u1ed9ng h\u00f2a S\u00e9c<\/option><option value='CF' >C\u1ed9ng h\u00f2a Trung Phi<\/option><option value='DJ' >Djibouti<\/option><option value='DM' >Dominica<\/option><option value='EC' >Ecuador<\/option><option value='SV' >El Salvador<\/option><option value='ER' >Eritrea<\/option><option value='EE' >Estonia<\/option><option value='SZ' >Eswatini<\/option><option value='ET' >Ethiopia<\/option><option value='FJ' >Fiji<\/option><option value='GA' >Gabon<\/option><option value='GM' >Gambia<\/option><option value='GE' >Georgia<\/option><option value='GH' >Ghana<\/option><option value='GI' >Gibraltar<\/option><option value='GL' >Greenland<\/option><option value='GD' >Grenada<\/option><option value='GP' >Guadeloupe<\/option><option value='GU' >Guam<\/option><option value='GT' >Guatemala<\/option><option value='GG' >Guernsey<\/option><option value='GN' >Guinea<\/option><option value='GQ' >Guinea X\u00edch \u0111\u1ea1o<\/option><option value='GW' >Guinea-Bissau<\/option><option value='GY' >Guyana<\/option><option value='GF' >Guyane thu\u1ed9c Ph\u00e1p<\/option><option value='HT' >Haiti<\/option><option value='US' >Hoa K\u1ef3 (M\u1ef9)<\/option><option value='HN' >Honduras<\/option><option value='HU' >Hungary<\/option><option value='GR' >Hy L\u1ea1p<\/option><option value='NL' >H\u00e0 Lan<\/option><option value='KR' >H\u00e0n Qu\u1ed1c<\/option><option value='HK' >H\u1ed3ng K\u00f4ng<\/option><option value='IS' >Iceland<\/option><option value='ID' >Indonesia<\/option><option value='IR' >Iran<\/option><option value='IQ' >Iraq<\/option><option value='IE' >Ireland<\/option><option value='IL' >Israel<\/option><option value='JM' >Jamaica<\/option><option value='JE' >Jersey<\/option><option value='JO' >Jordan<\/option><option value='KZ' >Kazakhstan<\/option><option value='KE' >Kenya<\/option><option value='KI' >Kiribati<\/option><option value='XK' >Kosovo<\/option><option value='KW' >Kuwait<\/option><option value='KG' >Kyrgyzstan<\/option><option value='LV' >Latvia<\/option><option value='LB' >Lebanon<\/option><option value='LS' >Lesotho<\/option><option value='LR' >Liberia<\/option><option value='LY' >Libya<\/option><option value='LI' >Liechtenstein<\/option><option value='LT' >Lithuania<\/option><option value='LU' >Luxembourg<\/option><option value='LA' >L\u00e0o<\/option><option value='PS' >L\u00e3nh th\u1ed5 Palestine<\/option><option value='TF' >L\u00e3nh th\u1ed5 ph\u00eda Nam c\u1ee7a Ph\u00e1p<\/option><option value='IO' >L\u00e3nh th\u1ed5 \u1ea4n \u0110\u1ed9 D\u01b0\u01a1ng thu\u1ed9c Anh<\/option><option value='MO' >Ma Cao, Trung Qu\u1ed1c<\/option><option value='MG' >Madagascar<\/option><option value='MW' >Malawi<\/option><option value='MY' >Malaysia<\/option><option value='MV' >Maldives<\/option><option value='ML' >Mali<\/option><option value='MT' >Malta<\/option><option value='MQ' >Martinique<\/option><option value='MR' >Mauritania<\/option><option value='MU' >Mauritius<\/option><option value='YT' >Mayotte<\/option><option value='MX' >Mexico<\/option><option value='FM' >Micronesia<\/option><option value='MD' >Moldova<\/option><option value='MC' >Monaco<\/option><option value='ME' >Montenegro<\/option><option value='MS' >Montserrat<\/option><option value='MA' >Morocco<\/option><option value='MZ' >Mozambique<\/option><option value='MM' >Myanmar<\/option><option value='MN' >M\u00f4ng C\u1ed5<\/option><option value='NO' >Na Uy<\/option><option value='AQ' >Nam C\u1ef1c<\/option><option value='GS' >Nam Georgia v\u00e0 Qu\u1ea7n \u0111\u1ea3o Nam Sandwich<\/option><option value='ZA' >Nam Phi<\/option><option value='SS' >Nam Sudan<\/option><option value='NA' >Namibia<\/option><option value='NR' >Nauru<\/option><option value='NP' >Nepal<\/option><option value='NC' >New Caledonia<\/option><option value='NZ' >New Zealand<\/option><option value='RU' >Nga<\/option><option value='JP' >Nh\u1eadt B\u1ea3n<\/option><option value='NI' >Nicaragua<\/option><option value='NE' >Niger<\/option><option value='NG' >Nigeria<\/option><option value='NU' >Niue<\/option><option value='OM' >Oman<\/option><option value='PK' >Pakistan<\/option><option value='PW' >Palau<\/option><option value='PA' >Panama<\/option><option value='PG' >Papua New Guinea<\/option><option value='PY' >Paraguay<\/option><option value='PE' >Peru<\/option><option value='PH' >Philippines<\/option><option value='FR' >Ph\u00e1p<\/option><option value='FI' >Ph\u1ea7n Lan<\/option><option value='PN' >Pitcairn<\/option><option value='PF' >Polynesia thu\u1ed9c Ph\u00e1p<\/option><option value='PR' >Puerto Rico<\/option><option value='QA' >Qatar<\/option><option value='AX' >Qu\u1ea7n \u0111\u1ea3o Aland<\/option><option value='MP' >Qu\u1ea7n \u0111\u1ea3o B\u1eafc Mariana<\/option><option value='KY' >Qu\u1ea7n \u0111\u1ea3o Cayman<\/option><option value='CC' >Qu\u1ea7n \u0111\u1ea3o Cocos (Keeling)<\/option><option value='CK' >Qu\u1ea7n \u0111\u1ea3o Cook<\/option><option value='FK' >Qu\u1ea7n \u0111\u1ea3o Falkland<\/option><option value='FO' >Qu\u1ea7n \u0111\u1ea3o Faroe<\/option><option value='HM' >Qu\u1ea7n \u0111\u1ea3o Heard v\u00e0 McDonald<\/option><option value='MH' >Qu\u1ea7n \u0111\u1ea3o Marshall<\/option><option value='SB' >Qu\u1ea7n \u0111\u1ea3o Solomon<\/option><option value='TC' >Qu\u1ea7n \u0111\u1ea3o Turks v\u00e0 Caicos<\/option><option value='VG' >Qu\u1ea7n \u0111\u1ea3o Virgin thu\u1ed9c Anh<\/option><option value='VI' >Qu\u1ea7n \u0111\u1ea3o Virgin thu\u1ed9c Hoa K\u1ef3 (M\u1ef9)<\/option><option value='RO' >Romania<\/option><option value='RW' >Rwanda<\/option><option value='RE' >R\u00e9union<\/option><option value='BL' >Saint Barth\u00e9lemy<\/option><option value='SH' >Saint Helena<\/option><option value='KN' >Saint Kitts v\u00e0 Nevis<\/option><option value='LC' >Saint Lucia<\/option><option value='MF' >Saint Martin (thu\u1ed9c Ph\u00e1p)<\/option><option value='PM' >Saint Pierre v\u00e0 Miquelon<\/option><option value='VC' >Saint Vincent v\u00e0 Grenadines<\/option><option value='WS' >Samoa<\/option><option value='AS' >Samoa thu\u1ed9c M\u1ef9<\/option><option value='SM' >San Marino<\/option><option value='ST' >Sao Tome v\u00e0 Principe<\/option><option value='SN' >Senegal<\/option><option value='RS' >Serbia<\/option><option value='SC' >Seychelles<\/option><option value='SL' >Sierra Leone<\/option><option value='SG' >Singapore<\/option><option value='SX' >Sint Maarten (thu\u1ed9c H\u00e0 Lan)<\/option><option value='SK' >Slovakia<\/option><option value='SI' >Slovenia<\/option><option value='SO' >Somalia<\/option><option value='LK' >Sri Lanka<\/option><option value='SD' >Sudan<\/option><option value='SR' >Suriname<\/option><option value='SJ' >Svalbard v\u00e0 Jan Mayen<\/option><option value='SY' >Syria<\/option><option value='CY' >S\u00edp<\/option><option value='TJ' >Tajikistan<\/option><option value='TZ' >Tanzania<\/option><option value='TH' >Th\u00e1i Lan<\/option><option value='TR' >Th\u1ed5 Nh\u0129 K\u1ef3<\/option><option value='CH' >Th\u1ee5y S\u0129<\/option><option value='SE' >Th\u1ee5y \u0110i\u1ec3n<\/option><option value='TG' >Togo<\/option><option value='TK' >Tokelau<\/option><option value='TO' >Tonga<\/option><option value='TT' >Trinidad v\u00e0 Tobago<\/option><option value='KP' >Tri\u1ec1u Ti\u00ean<\/option><option value='CN' >Trung Qu\u1ed1c<\/option><option value='TN' >Tunisia<\/option><option value='TM' >Turkmenistan<\/option><option value='TV' >Tuvalu<\/option><option value='ES' >T\u00e2y Ban Nha<\/option><option value='EH' >T\u00e2y Sahara<\/option><option value='UG' >Uganda<\/option><option value='UA' >Ukraina<\/option><option value='UY' >Uruguay<\/option><option value='UZ' >Uzbekistan<\/option><option value='VU' >Vanuatu<\/option><option value='VA' >Vatican<\/option><option value='VE' >Venezuela<\/option><option value='VN' >Vi\u1ec7t Nam<\/option><option value='GB' >V\u01b0\u01a1ng qu\u1ed1c Anh (Anh)<\/option><option value='WF' >Wallis v\u00e0 Futuna<\/option><option value='YE' >Yemen<\/option><option value='ZM' >Zambia<\/option><option value='ZW' >Zimbabwe<\/option><option value='AT' >\u00c1o<\/option><option value='AU' >\u00dac<\/option><option value='IT' >\u00dd<\/option><option value='DK' >\u0110an M\u1ea1ch<\/option><option value='TW' >\u0110\u00e0i Loan<\/option><option value='TL' >\u0110\u00f4ng Timor<\/option><option 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