You might be eating a big watermelon on such a hot summer day, or maybe you'll smell the smell of PVC hoses. Presumably everyone is familiar with PVC hose, which is used in many places in our lives, such as: home cleaning, home car washing, gas and dust transportation, garden watering and other places. But some just bought PVC hose in the sun for two days will find blackening and smelly smell, why this bad situation occurs, let's analyze why some PVC hoses are black and smelly from the raw materials of PVC hoses.
The raw materials of PVC hoses are fixed, and the raw materials are PVC resin powder, paraffin, calcium powder, etc. A good PVC hose will not add too much calcium powder, the more calcium powder is added, the worse the quality, less or no addition means that the cost of PVC hose is high. When buying PVC hoses, try to buy those calcium powder with less added is not too much taste, such PVC hoses will neither be black and smelly nor expensive.
When buying PVC hose, you must smell the smell first, then fold the PVC hose to see its flexibility, the third is put in the sun for a day, the fourth is placed in the refrigerator to see if the PVC hose is hard, and the fifth is baked with fire.
