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Chinese National Standards
中華民國國家標準
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"Composition marking " CNS Standards List

| PE Insulated | Method Test | Ferromanganese  | Method Test | Needle Clamp | Household similar | Engineering Drawing | General Rule |
H-Non-ferrous Materials & Metallurgy
CNS 2968    2021 Edition
Composition and marking requirements for metals of jewelry
飾物金屬之標示及成分

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