Methods for Identifying High-Quality and Low-Quality PVC Hoses

A high-quality hose:
1. Clearly marked with the registered trademark of the manufacturer.
2. Clearly marked with the operating temperature and working pressure.
3. Does not leak oil, does not contain calcium carbonate powder, paraffin wax, or other substitutes.
4. Clearly marked with the length in meters, meter markings, and accurate length.
5. Does not delaminate under frequent high-temperature and high-pressure use, and has a low expansion rate.
6. The product has no joints in the middle.
7. The packaging is neat and high-quality.
8. The product has no creases, is anti-kink, and not easily bent.
9. Maintains a certain degree of hardness and toughness in summer, and its flexibility is not affected in winter, allowing for easy handling.
10. Standard diameter, uniform wall thickness, and clearly marked with the type and model of reinforcing fiber.

A low-quality hose:
1. A "three-no" product: no registered brand, no manufacturer, and no production license.
2. No indication of operating temperature or working pressure, misleading consumers and allowing manufacturers to evade responsibility for problems.
3.  Does not offer a return policy for oil leakage; contains calcium carbonate powder and paraffin wax, which affect the service life.
4. Insufficient length and weight.
5. Frequently experiences poor adhesion and delamination.
6. The hose is made of two pieces joined together.
7. Poor and irregular packaging materials.
8. The product has creases and is easily bent.
9. Too soft in summer, resulting in insufficient pressure; lacks toughness in winter, making it difficult to handle and unusable.
10. Non-standard diameter, uneven wall thickness, and no distinction between fiber types and models; all use the same type of fiber.