it has developed main products including: 1. Explosion-proof fans for mines FBCDZ, FBCZ and FBD three large series totaling more than hundreds of product models; 2. Special axial flow fans for tunnel construction SDF(A), SDF(B) , SDF(C) and SDF(D), and special jet fans SSF for tunnel operation; 3. High pressure spray fans GPF three series totaling scores of varieties. 4.The centrifugal fans for industries and ore mines. 5.The axial flow fan for industries .6.The flexible ventilation fan duct .The products have the characteristics of reliable performance, stable quality and novel structure, and are well received by users. After being reviewed by CQGC, the Company is rated as "Trustworthy Product Promotion Unit". The products have been sold to more than 20 provinces, cities and countries. The fan impellers of the Company adopt new international technology, and the products are highly commended in such fields as mines, tunnels and environmental treatment.