YIYU.YIYU Company was established in Wenzhou, Zhejiang Province in October 2008. Its predecessor business originated in providing sealing leak solutions for valve manufacturers and began producing metal ring gaskets for international brands such as Japan's Walka in 2004. It has since evolved into a specialized domestic manufacturer of metal gaskets. The company's core strength lies in producing large weld-free metal gaskets up to φ2500MM in diameter. It has successfully obtained multiple high-end international and domestic certifications, including API 6A and API 17D from the American Petroleum Institute. Its professional capabilities are highly recognized within the industry, even contributing to the drafting of national mechanical industry standards. YIYU's primary products encompass various sealing rings, gaskets, and mechanical seals, positioning it as a technology leader in this field within China.