CHANGZHOU YIDA HARDWARE TOOLS CO.,LTD IS SOECILIZED IN PRODUCING AND MANAGING HAND TOOLS,SPECIAL TOOLS. PARTICULARLY IT IS SPECILIZED IN PRODUCING ALL KINDS SCREWS MAINLY.WE, CHANGZHOU YIDA HARDWARE TOOLS CO.,LTD, WELCOMES CUSTOMERS AND FRIENDS BOTH AT HOME AND ABROAD HERE FOR THE BUSINESS COOPERATION ON THE BASIS OF EQUALITY AND MUTUAL BENEFIT.