The types of ring -chain electric gourds are very rich, and they can be divided into three categories: single -hanging ring chain electric gourd, group suspension ring chain electric gourd, high -speed ring chain electric gourd. Single -hunting ring chain electric gourd. This electric gourd is generally used alone. The model is DHS type, which is relatively moderate. It is a very commonly used electric gourd. The group hanging ring chain electric gourd. This kind of electric gourd can only be used together, usually 10 and 20 units in a group, together with the same heavy objects together. It is mostly used for the improvement of large oil tanks. Because of the characteristics of multiple uses together, it is also called group hanging electric gourd. The obvious difference between high -speed ring chain electric gourd, ring chain electric gourd and steel wire rope electric gourd is the difference in speed. The slow and fast steel wire rope of the ring chain. This high -speed ring chain electric gourd has the speed of near the steel wire rope electric gourd, and it runs relatively smoothly. It is currently an electric gourd commonly used in various factories and factories, and it also represents the current advanced electric gourd type.