... transmit electricity and transformer, telecommunication etc. The applicable standard is ASTM, ISO, BS, DIN, JISG.2.company ... specialized in the production and operation of cable fittings, electrical fittings, overhead line pieces of iron and steel ... primarily engaged in the ADSS, OPGW cable fittings, electrical fittings, non-standard fittings, communication products, power lines iron, galvanized steel ...