Marcvan Technology is a multi source company for securtiy products.we cover ,security camera,access control.video door intercom,fire alarm,and hotel locks system.One Lock Electronic Co.,limited is a delicated to offer you the most competitive product.Company founded at 2001 in shenzhen City ,China special economical zone.We take more advanced technology to our products.During past 10 years,we established 2 sales team and 2 after-sales teams.To make sure you have no worry after purchasing.We manufacture parts of our security products.Such wireless camera,electronic locks ,access control keypad and hotel locks.And we have more than 10 years partner in other citys in China.We Work together to creat mutual benifits based on mutual trust.When you know us more,you will be interested in us more.One Lock Electronic Co.,limited is a the company who is not only supply goods.but we supply friendship.We burden your worry and share your happiness.Come to us,you will get moret than you expect!