... tried order acceptable 3.Nice after-sale service Electric SMT PCBA, OEM servicePCBA specific instructionMaterial:FR-4Layer: 2 ... .The other solder mask type we could do are: Red, yellow, white, black, purplePCBA&SMT PCB&PCB SMT ... : 15-20days (5 more days for trial order)ItemDescriptionspcba servicePCBA OEM&ODMkinds of pcba manufacturedPCBA service: medical, instrument, environmental, industrial, ...