Test contents 4.1 Appearance 4.2 Dimensions 4.3 Product mechanical properties The test contents of the mechanical properties of the product are as follows: a) Pull-off force of the drain tube; b) Tightening torque of the bottle cap; c) Opening torque of the bottle cap. 4.4 Product performance The test content of the product performance is as follows: a) Number of pump air pressure starts; b) Pump output; c) Fatigue resistance; d) Air spray test; e) Air spray pattern; f) Air spray angle (applicable) (applicable to spray-type pistol pumps); g) spray range (applicable to spray-type pistol pumps); h) mist particle size and distribution (applicable to spray-type pistol pumps). 4.5 Product safety performance The test content of product safety performance is as follows: a) Impact resistance test; b) Vacuum leakage test; c) Hazardous substance limits; d) Microbial limits. 4.6 Product stability The test content of product stability is as follows: a) High temperature resistance stability; b) Low temperature resistance stability. 4.7 Compatibility 4.8 Floatability (applicable to recyclable products)