AOPU, established in 2002, is a professional manufacturer engaged in the R&D of Access control, proximity card reader, and Our factory covers an area of 2000 square meters with around 30 employees.So far we have obtained the verified certificates of CE, ROHS, Computer patents etc.We have strong capability of Hardware quality control and Multiple OEM software solution. our Sales and technical support are always available to deal with your consult and inquiry, We Commit that our Desktop and Cloud software are free as well as our device SDK that you can use to integrate with your existed system. You can cooperate with AOPU in flexible ways, including OEM/ODM, or Brand sales, Project cooperation and Industry application joint development.