1. First of all, according to the design requirements of four-bar hinge, choose the appropriate type and specification of gas spring to ensure that its bearing capacity and elasticity are suitable for the required application scenarios.

2. Secondly, according to the structure and working mode of the four-bar hinge, choose the appropriate installation position of the gas spring, which can be installed on the side of the four-bar hinge with a small angle to provide the required supporting force and motion control.

3. Then, ensure that the installation position of the gas spring is firm and reliable to prevent it from loosening or falling off. Use appropriate fixing devices or fixtures to ensure the connection between the gas spring and the four-bar hinge is firm and reliable.

4. Finally, after the installation is completed, test and adjust to ensure that the gas spring works as expected. The spring force can be adjusted or replaced to meet specific requirements.