1)professional PCB assembly SMT processing(OEM&ODM) 2)Supplying circuit electronic board service pcba manufacturer ,pcba assembly ... introduction:1.Optional materials:Aluminium alloy,ABS,or other materials2.Layer: 2 layers3.Surface finish, HAL lead free4.Solder mask: Green5 ... prototype: 1. 10-15days, with customers completed technical information.2. 12-18days, with customers samples 3. 20-25days, with ...