This Co. can carry on PROTEL, PADS, SMART-MORK etc. various PCB files and make tin-sprayed, gold-plated, golden finger etc. circuit boards of various types; use graphic electric plating and hole-masking manufacture workmanship, forming an evenly thick graphic copper layer and make the circuit board of a high welding performance with eyelets and thin lines. For the surface treatment, use bare-copper foil oxidation-inhibited film processing workmanship and the application of fitting components on a hot surface. Of the chemical gold-plating workmanship, it features a small contacting resistance, good conductivity, flat and neat welding disk and is suitable for multiple ways of welding.