Product Category
Service Name
Fire Damper Series
Muffler Series
Aluminum Alloy Air Outlet Series
Positive Pressure Air Supply Inlet
Air Volume Control Valve Series
Smoke and Fire Damper Series
Smoke Exhaust Valve (Outlet) Series
Ningbo Yinzhou Donghai
Our factory specializes in manufacturing various specifications and models of HVAC (Heating, Ventilation and Air Conditioning) accessories, including fire dampers, smoke dampers (inlets), air supply inlets, as well as control valves, butterfly valves, mufflers, silencing elbows and aluminum alloy air grilles. Among these products, the fire dampers, smoke dampers (inlets) and air supply inlets are new-generation products—developed by domestic experts in accordance with the latest domestic standards and specifications. The fire dampers and smoke & fire dampers have passed tests by local inspection centers, with performance fully complying with regional standards; the mufflers have been tested by the Acoustics Research Laboratory of Tongji University (Shanghai), and their performance...
Company Profile
Our factory was founded in 1993, with a registered capital of RMB 2.1 million. Its annual production capacity reaches 100,000 units of various valves, 10,000 units of various air grilles, and 5,000 sets of various mufflers.
10,000+ units
Annual production volume of various valves
300+ companies
50+ people
28+ years
Served customers across the country
High-quality R&D personnel
Industry service experience
Honor and Qualification
Test Report
With years of industry experience, our professional standards comply with regional quality inspection indicators.
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