Satifiketi yatsopano ya UL UL10267 UL11627, UL10974,UL3773,UL3820,UL3994

Chingwe cha Wenchang chapeza satifiketi yatsopano ya UL/CUL, onjezani mitundu UL10267, UL11627, UL10974, UL3773, UL3820, UL3932, UL 3994 ku E214500, 2 Insulation, mpaka pano, tili ndi mitundu 700 ya chingwe cha UL.