Erzhong Group (Zhenjiang) Heavy Equipment Factory Co., Ltd. set up its major technical equipment out of Haikou base in Zhentu Dantu Economic Development Zone, which is the largest loading and lifting terminal on the Yangtze River. The gate is designed as three flexible lifting gate structures according to the size of the opening, and two swing arms are set in the middle. The size of the gate is 28 meters wide at the lower part, 36.5 meters wide at the upper part, and the door opening height is 36.5 meters.