back draught damper In the manufacturing of back draught damper, Yingde Ventech Air Conditioning Co.,Ltd always sticks to the principle of 'quality first'. We assign a high-efficient team to examine the incoming materials, which help reduce the quality issues from the very beginning. During each phase of production, our workers carry out detailed quality control methods to remove the defective products.

Ventech back draught damper back draught damper is noticeable for its design that is never out of date. The design team works continuously to simplify the design, helping product obtain many patents. The product showcases its strengths in performance and workmanship, which are also certified by the international testing institutions. Yingde Ventech Air Conditioning Co.,Ltd emphasizes quality control methods and arrange a team of experienced technicians to inspect production in each phase. The product tends to meet high standards.air supply valve,air exhaust valve,ventilation valve.