Established in 2000, shanghai changqiang heat-shrinkable material co. Ltd. Is an enterprise specialized in manufacturing and supplying heat/cold shrinkable materials. Ours is an iso9002-certified company whose heat shrinkable products have been awarded with ul, cul and CSA certifications, whose environment-friendly products have got sgs-certified and whose power supply products have passed tests performed by xi'an and wuhan labs. We take 'be honest and trustworthy and put customers in the first place' as corporate tenet and do our ut