Leading Innovation in Lead-Free Vacuum Insulation Technology
15+ Years of Manufacturing Excellence in Yongkang, China. Delivering Stanley-Grade Quality to Global Brands
GLOBAL COMPLIANCE & QUALITY CERTIFICATIONS
At Gencore, we don't just manufacture drinkware; we engineer safety and reliability. Every product leaving our facility undergoes rigorous testing to meet and exceed global health regulations. Our certifications from FDA (USA), LFGB (Germany), and EC (Europe) are a testament to our commitment to 100% food-grade safety and chemical-free hydration.
Scale Your Brand with Gencore’s Manufacturing Power
Curious about our process?
Advanced Infrared Vacuum Testing
Our facility utilizes state-of-the-art automated infrared scanning to verify the insulation performance of every single bottle, ensuring 100% reliability before shipment.
Rigorous 100% Manual Inspection
Beyond automation, our skilled technicians perform a final manual check on every tumbler to ensure flawless surface finishing and perfect component fit.
Commitment to Sustainable Manufacturing

Eco-Friendly Production Standards
Our facility integrates nature into the workspace, promoting a sustainable and healthy environment for our team while maintaining high-efficiency output.

100% Recyclable Materials
Gencore is committed to the circular economy. We prioritize “recycled 304 stainless steel”, ensuring that every product we manufacture is as kind to the planet as it is durable for the user.
Ready to Partner with a Leading China Drinkware Factory?
Whether you are looking for bulk wholesale or custom OEM/ODM development, our expert team is ready to support your brand’s growth.