Driving through the tunnel using withdrawable mixed coal mine ventilation fans should be in line with the "Coal Mine Safety Regulations" the relevant provisions. Fan commissioning, testing and operation of gas before pressurizing unit selection, should be out of air intake, side and the motor terminal box to set up security warning and prevent close contact with staff; Gas Pressure Machine selection, Zibo Blower Factory (certification) Puyang Gas Pressure Machine by Zibo Blower Factory Co., Ltd. Zibo Blower Factory Co., Ltd. (www.zibo-fengji.com) is a professional "fans, mine fan, mine fan, explosion-proof fan, heat fan, boiler fan" of the company. Since its inception, we adhere to the "good faith, sound management" approach, the courage of healthy competition in the market, so that the "cloud laugh" brand has a good reputation. We adhere to the "service first, customer first" principle, so that the congregation Zibo Blower won the trust of customers in fan, ventilation equipment, and establish a good corporate image. Special Note: This information is for reference only pictures and information, please contact us to obtain the most accurate information, thank you!