The main features of a simple freight elevator are as follows:

1. Simple structure and easy operation,. It can work without electricity or external support and can vertically lift and lower goods in small spaces.

2. It can be customized according to needs to meet the usage needs of various warehouses and factories. For example, the lifting height can reach about 6 meters, and the load-bearing capacity can reach 50kg per square meter.

3. The material used is lightweight, sturdy, and corrosion-resistant, capable of withstanding large load pressures. At the same time, it is equipped with various lifting devices, such as flatbed, forklift, chain, etc., which can be selected and used in a wide range.

4. Due to its strong mobility, it can be flexibly transferred from one place to another, greatly saving transportation costs and time consumption. It has gained widespread attention due to its advantages over traditional elevators.

In addition, the device also has the characteristics of environmental protection and energy conservation, which is in line with the national concept of green development. Due to its light weight, it can freely shuttle in narrow spaces and is a good substitute for some large mechanical equipment. In summary, this is my answer to your question. I hope it can be helpful to you!