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The choice of straight arm truck crane  or folding arm truck crane mainly depends on the use of the environment and personal needs. 12

The advantages of the straight arm crane include simple operation, large working radius, extending the working depth by placing a long wire hook, and easier installation on the vehicle chassis, which is conducive to the dispersion of the vehicle load. The structure of the straight arm crane is relatively loose, which can strictly control the take-off and landing of the crane, and the maintenance is convenient and the price is low. However, its workplace requires large space and is relatively inefficient.

The advantages of the folding arm crane are small space, high efficiency, and can be installed with a variety of auxiliary tools. The folding arm is connected by a joint-like arm connecting mechanism formed by a number of hydraulic cylinders, which makes it faster and more efficient when completing the action. In addition, the folding arm can be pulled together when transporting goods, occupying a relatively small space. However, its maintenance is more troublesome, the price is higher, and the operation is relatively complex.

To sum up, if the working environment space is large and there are high requirements for simplicity of operation, straight-arm truck crane may be a better choice. On the contrary, if the working environment is limited and requires higher work efficiency and flexibility, the folding arm crane may be more suitable. The final choice should be based on the individual's specific needs and use environment.