CYG Changtong New Material Co., Ltd is a subordinate high-tech enterprise of Changyuan Group Ltd, which is the biggest base producing heat-shrinkable material in China(Stock Code: 600525). CYG Changtong is specialized in R&D, manufacturing and sales of heat-shrinkable material for pipeline anticorrosion, heat-shrinkable wraparound sleeves for connecting of telecommunication cables and connection accessories for fiber cables.