TONGLI.TONGLI was established in 2005 and is located within the Siying Development Zone in Botou City, Hebei Province. The company produces 300,000 heating valves annually. The company specializes in heating series valves, including fully welded ball valves, fully welded strainers, fully welded differential pressure valves, fully welded thermal inlet energy-saving devices, self-operated flow control valves, and self-operated differential pressure valves. Products cover shut-off, filtration, regulation, and network balancing in the heating sector. TONGLI continuously develops high-quality products using new technologies, processes, and materials, making technology tangible to serve society and contribute to energy conservation and emission reduction in the heating industry. Key products include: DZLY Dynamic Resistance Balancing Valves, Self-Actuated Differential Pressure Control Valves, Self-Actuated Flow Control Valves, Self-Actuated Bypass Differential Pressure Control Valves, Self-Actuated Temperature Control Valves, Digital Locking Balancing Valves, Self-Actuated Self-Differential Pressure Control Valves, LH45-16 Series Flow-Limiting Check Valves, Fully Welded Ball Valves, Automatic Control Valves, Electric Two-Way Valves, Electric Butterfly Valves, Electric Valves, Electric Control Valves, Electric Differential Pressure Bypass Valves, Flow-Limiting Check Valves, Resilient-Seated Gate Valves, Gate Valves, Turbine-Type Butterfly Valves/Wafer-Type Butterfly Valves/Signal Butterfly Valves, Anti-Fouling Isolation Valves, Temperature Control Valves, Electronic Temperature Sensors, and Thermostats.
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