Produced according to Chinese GB standards.
Shell: Helmets are divided into two materials: PVC and PC. PVC is generally a non-one-piece helmet, and PC is a one-piece helmet.
Because the cost of PC shell is several times higher than that of PVC shell , so PC one-piece helmets will be more expensive. The one-piece helmet is durable and cold-resistant. PVC material is not cold-resistant, but PVC is more affordable and is generally used by entry-level riders. However, in Asia, the climate is still relatively mild.
One-piece helmets are divided into one-piece, two-piece, three-piece, multi-piece and so on. The so-called one-piece helmet means that the entire helmet is made of one PC sheet. Two-piece or multi-piece helmets are made of two or more PC sheets. One-piece helmets have a relatively single appearance, while two-piece or multi-piece helmets have a relatively simple appearance. The cost of a one-piece helmet with rich appearance will be higher than that of a one-piece helmet.
Extended information:
Notes:
1. Take out the helmet, put it on your head and tighten the chin strap.
2. The helmet should be wiped clean and stored after each use.
3. If the cap shell is damaged, it should be replaced in time to avoid unnecessary damage.
4. Helmets should be packed and unloaded with care during transportation to avoid rain, moisture, and exposure to the sun. Helmets should not be mixed with oil, acid, alkali and other flammable and explosive items or chemicals.
5. Helmets should be stored in a dry and ventilated warehouse, away from high temperatures, open flames, strong acids, sharp and hard objects, and away from direct sunlight.
Baidu Encyclopedia-Helmet