UK BEHO has 28 years of professional experience in envi ronmental waterproof and mildewproof and the world's innovative physical waterproof and mildewproof collar.First technology,the founder is the famous European physicist Juan Weines,the latest invention of BEHO-CHS-621 series of vi lla intelligent mildew wireless system,fundamentally solve and el iminate from the ground water due to moisture caused by the moldy surface and wall worldwide problem.This product has passed the European Union CE,APPLUS and China Intelligent Equipment Quality lnspection Cenfer of eleclromagnetic radiation detection certification,tne United states FCC radlo emission international rules monitoring certification andICNIRP organizatlon certification,this product has passed many international standa rds strict certification,harmless to human body,animal and plant completely.