1, Shandong You Yang Ventilation Equipment Co.

Main products: ventilation air building, roof ventilation skylight, natural ventilator.

Address: Shandong Liaocheng City, Tangzhuang Houjie Industrial Park North.

2, Shandong Bofit Environmental Protection Technology Co.

Address: No.18, Jialong Road, Liaocheng City, Shandong Province.

3, Liaocheng Guoyou Ventilation Equipment Co.

Main products: ventilation skylight, ventilation air building, finished air building, roof ventilation equipment axial fan negative pressure fan, powerless fan.

Address: Xutian Village, Hi-tech Zone, Liaocheng City, Shandong Province.

4, Sichuan McWay Ventilation Equipment Co.

Main products: electric lighting and smoke ventilating skylight, roof ventilator, ventilation air floor, ventilation skylight, FRP light board.

Address: Energy-saving Avenue, Huaikou Town, Jintang County (within Jintang County Industrial Concentration Development Zone).

5, Nantong Wanwei new energy science and technology limited company

Main products: metal roof enclosure system, ventilation and energy saving system, skylight system and assembly of steel structure accessories system based on the production and sales base.

Address: No. 666, Hanjiang Road, Development Zone, Haimen City.