Synchronous chip seal layer has many advantages, such as high strength, surface, non-slip, waterproof, durability, preventing driving rain and so on.

同步碎石封层具有强度高、表面粗糙、防滑、不透水、耐久性好、防止雨天行车水雾等优点。

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Waterproof synthetic leather upper gives you the protection and durability that you need.

防水合成皮革鞋面为您提供您需要的保护和耐用性。

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Subway engineering is often influenced by the underground water, therefore, the issue of waterproof decides the durability and sturdy of metro tunnel and the regular operation.

地下铁道工程时刻受到地下水的作用，防水问题不仅影响工程本身的坚固性和耐久性，而且直接影响到地下铁道的正常使用。

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