Many users don't know what to choose when they buy a safety kit.We often have to worry about the protection box material, strength, waterproof and other properties.

Selection method of protective box:

Size:

Double shell protection box is engineering modified pp plastic (pp alloy) by injection molding machine one-time injection molding, its size is fixed, we must choose the first size is appropriate.

Material:

The material of protective box project modificates pp plastic (pp alloy) for optimal, 3 armed forces line protective box is its material material, engineering modificates pp (pp alloy) have better rigidity and impact, wear-resisting, firm and durable, bear high low temperature, cost is higher.Can reach military level.

Structure:

The main body of the protective box is connected by the bottom of the box and the cover with the whole hinge. The duplicate part is composed of the button hand, the handle, the sealing ring and the air valve.Its connection part with aviation aluminum pin best, aviation aluminum never rust, heat resistance, high temperature resistance, low temperature resistance, resistance to chemical corrosion and electrochemical corrosion performance in steel is the best.

Strength:

The protective box is connected by the bottom and the cover of the box with a whole hinge, and there are sealing rings inside, and then pressed together by the button hand.A good protective box can be freely dropped from a height of 10 meters, the bottom of the box and the lid will not be separated;Mute lock, if not artificially opened, will not open because of impact.

Good protection box in room temperature and pressure, immersed in 1M deep water will not have water infiltration.