... 4, electronics assembly contract assembly manufacture service, EMS , PCB assembly. 1, full turnkey solution( SMT, AI , PCBA , testing , casing ... is excellent and stable. * We choose the best material for all our products. * We will send the boards to you by DHL, TNT, ... and friendly business relationship with you. Good quality, reasonable price and the 5-Star service are guaranteed.Pls. Send us PCB ...