Electric double girder crane is composed of what conditions?

Now with electric double girder  bridge gantry crane  on the market is that people pay greater attention to the product, along with its reputation in the market, so good, along with its development speed so fast, the effect is so good, so people also prefer to use their in the course of its use are generally more comfortable, which is a feature of its relatively large, in the course of its use, there are many companies on the electric double girder cranes are more optimistic, and think it is useful potential for development, so its frequency of use is relatively high, so now is the electric double girder crane what conditions constitute it?
1 electric
As the electric double girder  overhead bridge crane  certainly constitutes the most important condition is electric, and generally in the course of its electric operation is automatically operated, generally able to automatically operate product is loved by a lot of people, under normal circumstances so much loved by the odds are not great, unless it is one of their more optimistic or is it in the market has developed over the years, and only in this case will have electric products, so that the electric products on the market is are more useful.
2 double beam
General Electric double beam crane for its use in the process often comes in many forms, the forms, the more the more it is advantageous for the product, so that the more the more favorable product better able to survive in the market this is inevitable, so the electric double girder  overhead gantry crane  is more of a product to make it feel comfortable.
This is some of the electric double girder crane constitute conditions.