Hunan Gaintop Technology Incorporated, is a high-tech branch enterprise of China&＃39;s Minmetals which engaged in production and sales oxyhydrogen energy equipment, environmental protection welding & cutting vehicle care etc. This company located at the foot Yuelu Mountain, with ...

S&S New Energy Tech Co., Limited is one of the earliest companies in China being engaged research, development and production HHO generator, it also named ox hydrogen brown gas water welding machine, engine carbon cleaning for car, etc. Our site covering an area more than 3,000 square meters, has ...