This solar junction box adopts full Potting-glue, waterproof, and has been certified by TUV. This product is a high-heat dissipation and high-power junction box developed for 166,182,210, heterojunction and other crystal silicon high-efficiency half cell PV module.The copper bridge and diode are welded by DC resistance spot welder,which can make the copper bridge and diode pins fuse together,and the contact resistance is almost zero,reducing the power loss of the PV module.The diode pin falls off from the copper bridge without the influence of high temperature caused by welding strip.Compared with the modular junction box on the market,this product can increase the passing current by about 10%under the same conditions of diode chip,and the junction temperature is lower.