... the manager of export department of Ningbo Zongda Electric Appliance Spring Co., Ltd.Our company are a professional manufacturer specialized in ... of wire (ie. Vacuum Cleaner, electric cooker, Electric drier, Electric Water Bottle Starter, Electric iron,Meat grinder,Timer of washing ... Oven, etc...).Constant force spring for door ,windows ,electric fans ,machines of lift and down.And are specialized ...