Rapports de matières premières

11mm environmentally friendly copper rod material test report for jewelry manufacturing by Haosen Jewelry
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Cover image for Haosen Jewelry CTT test report on 16mm environmentally friendly copper rod material dated March 17, 2026.
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SGS RoHS Test Report for 316L stainless steel bars issued on Feb 04, 2026, demonstrating 100% compliance for jewelry raw materials.
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A close-up of premium brown and grey textured leather fabric samples, titled "Where Does Our Leather Come From: Unveiling LWG Gold-Certified Leather."
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SGS 316L Stainless Steel Bar Material Nickel Release Test Report
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