Your business is a plant, we are the gardener, our mission is to water and fertilize the plant, and make it become the tower tree. S4A is established in 2006, we focus in manufacturer access control products for OEM&ODM and project solution.

With branch office in Qatar, and sole agent in Singapore, Malaysia, The Democratic Republic of the Congo, South Korea, and Egypt. S4A's products circulate around the world. We attach great importance to partner's appeal, customer's s estions and feedbacks. To strengnth Product quality awareness, client's service awareness. Our clients and S4A are in the same path walking for many years. So 85% of our business come from cooperated customers.