Production & Lab Test
Production
Our state-of-the-art factory transforms innovative R&D designs into high-quality jewelry for our clients. Every piece is meticulously crafted from medical-grade materials and undergoes rigorous allergy testing to ensure the highest standards, providing retailers with confidence in the jewelry they offer to their customers. To enhance brand identity, we offer flexible packaging options, allowing jewelry to be delivered in our signature packaging or customized with client designs for a unique and personalized presentation.
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RESEARCH

CAD DESIGN

MOLD PRINTING

PRODUCT TESTING

POLISHING

CASTING
Quality & Control – Lab testing
At GNJ Manufacturing Inc., we prioritize rigorous quality control and lab testing to ensure the safety and durability of our fashion jewelry. Metal contamination presents significant health and safety risks, so our products comply with Registration, Evaluation, Authorization, and Restriction of Chemicals (REACH) regulations in the EU, which govern nickel release, lead, cadmium, and phthalates. In the U.S., children's jewelry must meet stringent chemical safety limits set by the Consumer Product Safety Improvement Act (CPSIA) and California’s Proposition 65. Our comprehensive testing process measures torque, tension, compression, flammability, and corrosion resistance, guaranteeing that every piece is built for long-lasting wear and consumer satisfaction. To uphold the highest industry standards, all jewelry undergoes certified testing and meets strict U.S. and EU regulations, with our factory passing Walmart Standard testing, recognized for maintaining the industry's most rigorous requirements.

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Lab Testing Companies & Test Results
All of jewelry is tested and meets the highest US and EU testing standards. Our Factory passed Wal-Mart Standard testing which withhold the highest standard in the industry.

