TONGLI.TONGLI Company was established in 2005 and is located in the Siying Development Zone, Botou City, Hebei Province. As a specialized manufacturer focused on heating series valves, it boasts an annual production capacity of 300,000 units. The company offers a comprehensive product line covering core heating applications including shut-off, filtration, regulation, and network balancing. Key products encompass fully welded ball valves, various self-operated control valves (such as differential pressure valves and flow control valves), dynamic resistance balancing valves, and electric control valves. TONGLI consistently adopts new technologies, processes, and materials, dedicating itself to developing high-quality, energy-efficient valve products. Through technological innovation, the company serves society and actively contributes to energy conservation and emission reduction in the heating industry.