... UL,VDE,CQC,CB,CE certificates Su Zhou Changhe Electronics Co.,LTD is a specialized terminal blocks manufacturer with the whole process ... and marketing ,which belongs to the Changhe Group(Hong Kong) Co.,LTD ,as one of the production and marketing bases in China ... as R&D center,workshops for plastic mould,punching mould,hardware cutting,components molding and assembly. Nowadays,we have six series ...