we specialize in manufacturing Door Lock,and shall be pleased to enter into trade relations with you. As a large-scale non-regional lock group approved by State Administration of Industry&Commerce,China Qiang Qiang Group Co.,Ltd.comprises 4 lock enterprises among Top 10 lock kings in China and other 4 specialized lock manufacturers.Provided with a registered capital of RMB200 million.It is the largest lock group in China at present.Apart from these enterprise,Qiangqiang has dozens of satellite factories and over 150 cooperative factories under its management.the group mainly produces medium and top grade door locks,architectural hardware etc..more than 80 series,12000specifications and varieties.If you are interested ,pls do not hestitate to let me know.