As The Sales Agent in China for Mul-T-Lock Technologies Ltd. Shenzhen CHANGEN Industry Co.,Ltd, Managing A Wide Range Of Security Products Including High-Security Cylinders, Locks, Doors And Safes Which Have Gone Through The Tests By The Chinese Security Department And Comply With The Standard GA/T73-94. Since Its Establishment In 2003, The Factory Which Is Situated In Chenzhen Was Developed And Produced Wore Than One Hundred Kinds Of Security Doors Including The PVC-Covered, Stainless Steel And Wood-Steel Combined, Etc. With High Quality, Reasonable Prices and Varied Models According To the Real Situation in China Market. With Their Main Assemblies From Mul-T-Lock Technologies Ltd, The Doors Have Gone Through The Inspections By The China Public Security Ministry And Comply With The Standard GBI7565-1998 In Which Tow Models Of Doors Have Been Patented. The Company Is Not Only Managing The Products But Mainly The Security Career. Our Ambition Is To Bring Mul-T-Lock Products Into Most Families In China By Setting Up A Perfect Image Of Excellent Production, Excellent Sales And Excellent Services Production, Excellent Sales And Excellent Services. The Company Is ISO9001 Certified and Is In the Course to Supply Satisfactory Security Solutions and Services for More and More Customers