this video had published by longjoin manufactories made at 2019 year 8 month middle , and so simply content to reveal our factory real truth factory hard strength. and the same moment for you, this a short content video, one side to toll me here had been 20-years run into history, and have new a Phase II plant structure large size workshop of professional outstanding waterproof IP66 rating zhaga socket jl-700. just to you other side,longjoin factory not only main nema type standard photocontrol receptacle, also to pull out new standard regular zhaga book 18 product for european.