Silver plating intended for engineering purposes is usually employed for solderable surfaces, electrical contact characteristics, high electrical and thermal conductivity, thermocompression bonding, wear resistance of load-bearing surfaces, and spectral reflectivity.
For your Silver plating requirements, Golden Plate Electroplating has facilities for plating using both Jig & Barrel process.
Silver is whitish (slight yellowish) colour, it offers the best electrical conductivity and thermal conductivity of any metal. Solderability is excellent but decreases with age as it will tarnish easily.