Shanghai YuHao Environmental Engineering Co., Ltd. was founded in March, 2010, is a professional company in research and production of environmental protection equipments. The initial construction of this company is made up of a group of professionals engaged in design and marketing of environmental protection products for many years. We are constantly innovating and developing new products, from the beginning single automatic polymer dosing machine to now diversified three-dimensional structure of biological http://www.yhenviro.com/