Established in 2003,ZHONG SHAN OPTEN ELECTRICAL APPLIANCE CO.,LTD is professional manufacturer of Electric Water Heater, Electric Boiler,Water Circulation warm mattress and Air pressure switch . We are Located in NO 20, Dong Fu Road Fu Sha Town Zhong Shan City Guang Dong Province where is one of the famous manufactuers base of home appliance in China. With more than 4000 square meters plant ,excellent technology and experienced talented R&R team.Our product with own patented technology,it ...