Our History Onesto was born in 2005. It is a high quality solar electrical products brand integrating design, R&D and production. After 15 years of development, it has become a global leader in photovoltaic products intelligent manufacturing. It has a number of patents in the field of photovoltaic products, and is a high-tech enterprise in Zhejiang Province. Our Factory Onesto has two production, R&D and sales areas, more than 10000銕? We have perfect quality management system and automatic production equipment. The whole production process is operated under the ISO9001 quality management system. By introducing the advanced ERP system and the internal testing laboratory, onesto has realized the whole process quality tracking management. Our Product We provide a series of products for solar energy systems, such as solar inverter, solar energy storage battery, DC circuit breaker, DC SPD, PV combiner box, etc. Our Service We provide customer with professional solar system solutions , and provide one-stop shopping services. One to one customer service makes customer worry free about after-sales service Product Application Our products are widely used in household power generation, commercial power generation, industrial power generation, etc Our Certificate Our products cover various of international standard with BS,EN,IEC and acquired CE,CB, TUV,SEMKO,SAA,KEMA-KEUR, UL certificates. Also acquired patent certifcates for independent intellectual property rights. Test Equipment Diagram5kw AC Coupled Solar Inverter website:http://www.onestoenergy.com/