1. Look at the selection of materials

FAN Shell Mould is a commonly used product in the family, so one hundred must choose products with good materials. You can use the combustion test method to identify. Good quality products are not flamboyant and good flame retardant. It also produces a pungent odor.

2. Look at the feel

Good quality switches are mounted with light, good elasticity, and strong switching; switch spring with poor quality is soft, which will be stuck in the middle and easy to break. There are protective doors of the socket jack, which cannot be inserted with one foot, and a certain amount of intensity is needed.

3. Look at the appearance

Generally, the surface of the good switch is very smooth and smooth, and the imported PC materials are used, and the feel is very good. The quality of the product with poor quality is rough and the flame retardant is prone to hidden dangers of fire.

4. Look at the weight

When buying a switch, you can also take the amount of the switch. Usually the well -quality switch is made of copper, which is heavier. If alloys or thin copper pieces, the quality is not as good as copper.

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