Waterproof design is a systematic project. If the project is confirmed to achieve the goal of waterproofing, then the main line of structural design should be arranged and stacked around waterproofing. For the current structural design of three-proof products, material technology is mainly used to realize waterproofing, dustproof, anti-fall, waterproof and dustproof mainly by blocking, and anti-fall mainly by wrapping soft materials around the periphery to prevent impact!