密封性好，防水，防潮，可以延长产品寿命。
Good seal, water proof, moistureproof, can prolong the life of goods.
我们所有的木箱密封性好，它们不易受潮腐蚀。
All our wooden cases are well sealed. They are not easily subject to sweat damage.
密封性好，对作业环境无污染，操作方便，噪音低。
Good seal, no pollution of the environment, easy operation and low noise.
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