Haining Oupairineng Solar Water Heater Co., Ltd is an enterprise  specializes in research, production and sales of solar water heaters with advanced equipments, technologies and many service centers. The uniform distribution and sales services have been offering great support to the global stores and agencies of ONOSI. ONOSI solar energy adopts advanced production technology, and is very strict with management of every segments in production from material selection, production to outer packing of solar product.