Our factory, Zhenjiang TongLing electrics factory, located in Jiangsu China, has been engaged in researching, developing and producing PV junction box unit for almost 5 years.  And with pleasure, we are one of the largest appointed supplier to SUNTECH, which illustrate well that our products are more reliable and more competitive;
Meanwhile, we already applied items of patent for our invention, and our products has passed TUV, UL certification;
Thanks for visiting this page, if you have any interest on us, pls feel free to contact us, we're looking forward to be your most reliable supplier.