The current waterproof junction box manufacturing materials are mainly divided into two categories, one is plastic and the other is stainless steel.
Among them, the main types of plastics commonly used in plastic junction boxes are engineering plastics, PCs and fiberglass. The reason why these materials are used is mainly because they have good waterproof effect, long service life, and the source of materials is relatively cheap, so the price is relatively cheap, so even in the future there is a good application prospect.
As for the stainless steel junction box, it is generally used in certain occasions, and it is rare in life. And depending on the elements contained in the stainless steel, the application will be different.
The above two types are commonly used materials for making waterproof junction boxes.