C-Alley list IPC Standards for PCB manufacturing and assembly industry, which are our guidelines of quality control. Specific operation manuals in compliance with IPC standards and ISO9001:2008 are placed at every single workstation and our staff can see them overhead. In this way, we can prevent potential risk caused by incorrect operations and related manufacturing process can be simplied. We never stop our steps to improve quality control abilities. Your satisfactions with our services would be best reward to our efforts.