On the 33rd anniversary of Zhongquan Air-Vent Valves, Changchun Kuancheng Boiler Air-Vent Valve Factory extends sincere gratitude to all new and existing customers!

Founded in 1985, our brand has specialized in the R&D and manufacturing of full-auto air-vent valves, geothermal filter valves and other related products for more than 30 years. We uphold rigorous production standards, enforce strict quality control and continuously refine our technology to deliver stable and reliable valve solutions for HVAC systems.

Thank you for your long-term support. Zhongquan will forge ahead unremittingly!