... .,ltd. Hangzhou Singo Tech Co. Ltd, located in West Lake technology park in Hangzhou Zhejiang province, is only about an hour ... * RoHS Directive-compliant, lead-free * One stop service for PCB design, PCB layout, PCB manufacture, components purchasing, * PCB assembly, test, ... am Eva. Our team and I will do our most to meet your requiremt.Work shop:Production line:Test tools: PCB design and assembly