S&S HHO is one of the leader enterprise of oxy-hydrogen generator in Changsha, China. We are specialized in researching and developing of HHO generator, hydrogen energy equipment, environmental equipment, welding and cutting equipment, and vehicle maintenance equipment with environment friendly, low energy consumption and high efficiency technology. At present our products are widely used in vehicle repair and maintenance field, boiler combustion supporting, truck fuel-saving, welding and cutting field, medical care and other business fields.We have a professional and experienced R&D team that can provide the latest technology to satisfy customer's different requirements.All products have got great comments from our Southeast Asia, USA, Canada, Europe, South America and South Africa clients."Survive by Quality, Develop by Service" is our policy to do business. We believe that we will only supply you the high quality products, the competitive price, the considerate after-sales service, the satisfying OEM & ODM service !