1. Observe whether the surface of the plastic hose is smooth, and observe whether the diameter of the hose is a standard round shape, whether there are bubbles in the entire plastic hose body, and whether the wall thickness of each part is uniform.
2. Smell whether the plastic hose has a special smell. Normally, high-quality plastic hoses will not produce odor and will not have a pungent smell, but inferior pipes will have some odor.
3. If a plastic hose is made of inferior plastic material, it will age faster during storage and use, its color will turn yellow, and the pipe wall will harden. This can be proven by time. High-quality plastic hoses can still be used normally when taken out under normal storage.
