Nearby location: Selecting a PCB assembly service that’snlocated nearby to reduce shipping costs and product timelines nn Material quality: Ensure the materials they use are high quality as not all of them are equally conductive. nn Assembly processes: Try to know how their PCB assembly process works and assess how much they emphasize every detail. nn Testing Methods: Choose a PCB assembly service that performs rigorous testing and follows all guidelines. nn Communication & Cooperation: Try to find out how responsive and cooperative they are so that it doesn’t hurt while it’s in the production and cause delays.