Coating film hardness: The outer surface coating film hardness is not less than 2H pencil hardness. Coating film adhesion: Coating film adhesion is not less than level 1. Opening and over-shifting torque: The opening and over-shifting torque of screw-top foam bottles should comply with the requirements in Table 6. Component detachment force: Component detachment force should comply with the requirements in Table 7. High and low temperature resistance: High and low temperature resistance should comply with the requirements in Table 8. Sealing performance: After sealing test, there should be no water leakage, no deformation, no cracking, no cracks in the coating film and surface decoration pattern, and no obvious discoloration. Drop performance: After the drop test, there is no leakage, no impact on use or breakage. This test does not evaluate glass foam bottles. The number of times to start the air pressure of the pump: the number of times to start the air pressure of the pump shall not be more than 6 times. Pump output: The allowable deviation of pump output is ±15%. Fatigue resistance: Press fatigue limit no less than 500 times.