Shenzhen Sako Solar Co.,ltd , which was specialized in solar inverter , lithium battry and solar panel since 1993 with its own factory. All certificates like ISO, OHAS18001, TUV, CE, CB, CQC,PSI, COC, SONCAP etc are available for you . Our agents are all over the world , such as Middle-East,South Africa, Asia etc, OEM/ODM service are welcomed here . Wechat: Joanna-Sako Whatsapp&phone:+8613689584413