We retain bettering and perfecting our merchandise and service. At the same time, we do the job actively to do research and improvement for Rack And Pinion Tunnel Door System, Curtain Motors For Dairy Barn , Circulation Fans For Poultry Houses , Sidewall Ventilation For Poultry ,Plastic Slat Floor . Our Lab now is "National Lab of diesel engine turbo technology " , and we own a professional R&D team and complete testing facility. The product will supply to all over the world, such as Europe, America, Australia,Sevilla , Kazakhstan ,Mauritania , South Africa .We are adhering to the philosophy of "attracting customers with the best products and excellent service". We welcome customers, business associations and friends from all parts of the world to contact us and seek cooperation for mutual benefits.