Daqing Environmental Technology Co., Ltd. Established in 1998, More than 20 years on HHO engine carbon cleaning machine.Oxy-hydrogen generator, And dpf clean machine manufacturing experience.Our product exported to USA, KOREA, INDIAN, MEXICO, CANADA UK,Poland, Germany and so on,It's owned very high reputation during our customers.1\Located in Pingxiang industry park,Jiangxi Province. Leading factory of hydrogen and oxygen machine industry, More 20 years experience in this area of production .2\The most advanced technology. It has 30 technology designs,20 year technology development, 20 technical support specialists, 10 technical engineers, and 10 safety guarantees. Also, under the strict quality control, there is zero accident.3\Product widely used for motorcycle and diesel or gasoline car 0.6-20.0 liters,The biggest engines like on Ship, Train only we can service.4\Have our own operating system. and authorized CE, ISO, SGS, FCC, has been verified by world-leading inspection company,Bureau Veritas.5\Production capacity more than 200 sets per month. The most complete product series, devote to improving old products and developing new products.Our company website is https://pxdaqing.en.alibaba.com/If your are interested in our products,please contact with us, we will sent the detail information and price list. Welcome to visit our factory and test our machine! Warmly welcome to be our agent!