Elecsound company specializing in the production of double-sided and multilayer PCB, the highest floors of the 20 Machinable. Surface Treatment: Spray tin plate, the electricity board, the board Shen Shen tin plate, a blue plastic sheet, Goldfinger plates, carbon oil plate, the blind buried Orifice, antioxidant Banban. New substrate processing varieties: high TG boards, aluminum plate, ROGERS boards, ceramic substrates, thick copper