Multilayer PCB /PCBA design,bom list gerber files ,prototype PCBA manufacturing Buyer and Importer

I am looking for a company able to make SMT prototypes of very simple electronic modules accordingly to the schematic diagrams.After accepting each module much larger quantity of these products will be required. Continues cooperation, simultaneous design and mutual interest is possible.Examples of simple modules:1.Voltage controlled current source2. High impedance simple amplifier3. Pressure to voltage ttransducerPlease advise. Thank youRegards,Witold Wojcikdule much larger quantity of these products will be required. Continues cooperation, simultaneous design and mutual interest is possible.Examples of simple modules:1.Voltage controlled current source2. High impedance simple amplifier3. Pressure to voltage ttransducerPlease advise. Thank youRegards,Witold Wojcik Show More