Advanced Manufacturing Equipment for High-Quality Drinkware at GreaThermos

At Jinhua Great Metal Products Co., Ltd., we pride ourselves on producing premium drinkware that meets the highest international standards. Our factory, located in China's Zhejiang province, is equipped with state-of-the-art manufacturing machinery that ensures every bottle, mug, and flask we produce is durable, safe, and eco-friendly.

Key Manufacturing Equipment in Our Facility

• Automated Stamping & Forming Lines – Precision hydraulic presses and progressive dies shape high-grade stainless steel into seamless bodies for vacuum flasks, sports bottles, and tumblers.
• Laser Welding Systems – Our advanced laser welders create airtight seams in double-wall vacuum flasks, maximizing thermal insulation while maintaining structural integrity.
• Vacuum Insulation Technology – High-performance vacuum pumps and sealing stations remove air between walls, delivering superior heat retention for up to 24 hours.
• Robotic Polishing & Buffing – Automated robotic arms achieve a mirror-like finish on stainless steel surfaces, ensuring a smooth, scratch-resistant appearance.
• Injection Molding Machines – For lids, spouts, and accessories, we use precision injection molding with FDA/LFGB-approved food-grade plastics.
• Powder Coating & Spraying Booths – Eco-friendly powder coating lines provide a durable, non-toxic, and customizable finish that meets California Proposition 65 requirements.

Rigorous Quality Inspection Process

Every production stage is monitored by our in-house quality control team. We conduct:

• Raw Material Testing – Spectrometer analysis verifies stainless steel grade (304, 316, etc.) and confirms heavy metal content complies with FDA, LFGB, and Prop 65 standards.
• Vacuum Leak Detection – Helium mass spectrometer leak testing ensures each vacuum flask is perfectly sealed.
• Drop & Pressure Tests – Automated testing machines simulate real-world usage to guarantee durability.
• Final Visual Inspection – Trained inspectors check for surface defects, color consistency, and lid fitment.

International Certifications & Sustainability Commitment

Our drinkware is certified by FDA, LFGB, and California Proposition 65, confirming materials are safe for food contact. We also use biodegradable packaging to minimize environmental impact. With over 10 years of experience, we maintain a strict quality management system that ensures each shipment meets or exceeds global regulatory requirements.

Partner with GreaThermos for trusted, high-quality drinkware manufacturing. Contact us today to discuss your OEM/wholesale project.