Actuator design with fully sealed waterproof high degree of protection.
执行机构采用全密封防水设计防护等级高。
Waterproof performance: the whole sealing process design, waterproof.
防水性能：全密封性工艺设计，防水。
It is important to do well the construction waterproof work. The design is essential prerequisite.
做好建筑防水，设计是前提，保证设计质量有三个重要环节。
It is important to do well the construction waterproof work. The design is essential prerequisite.
做好建筑防水，设计是前提，保证设计质量有三个重要环节。
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