Weltech was founded in Shanghai, China. After years of working experience in grow lights and hydroponics equipment, we have rich experience in OEM product development and research. Our product line including CO2 generator,carbon filter,double-ended bulb,fabric pot,plastic pot,600w grow light,LED grow light,mylar reflective film,grow tent,air duct,CMH 315W,hydroponic herb gardens more https://weltechsh.com/