1. Non toxic, lightweight 2. Pressure resistant and corrosion-resistant, 3. Has no scaling, no rusting 4. Non permeable bully

1. High stiffness and strength, strong impact resistance 2. Easy to install 3. Good electrical insulation

1. Good rigidity and uniform force distribution 2. The pipe material is smooth and flat, and the cable threading is light and easy, 3. Having multiple hole positions