How to buy a good quality waterproof cell phone bag?

In response to the waterproof cell phone bag is not waterproof and other issues, try to choose a high-quality waterproof cell phone bag, pay attention to the choice to the legitimate business qualifications of the merchants to buy; according to the need to choose the waterproof bag suitable for their own, can not just based on the price of the goods to choose. To pay attention to identify the waterproof level of waterproof bags, if you want to use as a long time diving and other activities, high pressure, you should choose the material quality waterproof bags. To pay attention to check the goods, check whether the goods have a certificate of conformity and instruction manual, etc..

Pay attention to the shelf life of products, commodities have quality assurance "three packs" period, consumers should pay attention to retain the consumer vouchers, the timely use of goods, found that the problem of timely rights.

Waterproof materials in fact has not been a unified definition of waterproofing technology is constantly being updated to accelerate the diversification of waterproof materials, in general, to prevent rain, groundwater, industrial and civil water supply and drainage, corrosive liquids and moisture in the air, steam, etc. intrusion into the building of the material is basically referred to as waterproofing materials. Waterproof materials are mainly three categories: waterproofing membrane, polyurethane waterproofing materials, new polymer cement-based waterproofing materials. Waterproof materials in fact has not been a unified definition of waterproofing technology is constantly updated to accelerate the diversification of waterproof materials, in general, to prevent rain, groundwater, industrial and civil water supply and drainage, corrosive liquids and air moisture, steam and other invasive materials into the building are basically referred to as waterproof materials. The building envelope to prevent rain, snow and groundwater infiltration; to prevent airborne moisture, steam and other harmful gases and liquids erosion; separation structure to prevent the seepage of water supply and drainage. These materials against infiltration, leakage and erosion are collectively referred to as waterproofing materials.