Currently, China Electricity Council organized Electric Power Industry Standard Reviewing & Editing Conference in Nantong city. ZTT, as undertakers of this conference attending this editing conference together with China Electricity Council, ,China Electric Power Research Institute, State Grid, etc.

ZTT OPPC and its supporting fittings are widely applied in 10kv, 35kv, 110kv, 220kv transmission lines and set product application records by the large section, high voltage, alpine, high altitude, and heavy ice.

ZTT makes efforts on developing OPPC and finally succeed in providing OPPC series applied in voltage of 500kv and over 500kv environment in 2012. With expanding OPPC industrial application in over 500kv voltage, ZTT created the highest applicable high voltage level not only in domestic but also worldwide.