DOUBLE-LIN.DOUBLE-LIN was established in 2009 and is headquartered in Yuhuan, Zhejiang. As a manufacturing enterprise dedicated to developing a national brand and leading the healthy growth of the industry, the company remains true to its founding mission: to manufacture durable products that deliver comfortable and safe experiences for users worldwide. Its product portfolio encompasses HVAC systems, water valves, gas valves, PPR pipes, and other piping solutions, all rigorously manufactured to meet the most stringent international quality standards. Through continuous process optimization, the company has achieved near-complete automation and modernization in production. Critical components and core manufacturing equipment are imported from Europe, ensuring consistent product quality worldwide. DOUBLE-LIN is driving sustainable economic growth through its high-standard technological innovation and unwavering commitment to quality.