The group hanging electric gourds are divided into positive and upside down, and there are long and upside down and short -hanging upside down. Similarly, the group hanging electric gourd can also be installed and inverted. The formal installation needs to be set up in the scaffolding required for the construction operation. Due to the poor conditions of high -altitude operations, the scope of construction activities is limited, and it is far less convenient to operate on the ground. Rarely. The main advantage of the inverted method is to reduce high -altitude operations, thereby saving scaffolding materials. The construction activity range is large and the safety is high, which also improves work efficiency. Therefore, the inversion method is currently widely used. The formal installation method is suitable for any type of tank construction, but due to its large workload, consumed more materials, and high -altitude operations, it is suitable for large tower equipment construction. The inverted method is widely adapted, which can theoretically apply to any size storage tank. The second is that the operation control is simple, reliable, and low. The main disadvantage is that the current set of equipment is more expensive and the equipment purchase is largely invested.