But about half of cases of never-smokers with lung cancer cannot be explained by known risk factors, which also include asbestos, indoor wood-burning stoves, and aerosolized oils caused by cooking.
Used for the waterproof sealing on concrete wall panel slab ventilation pipes the light weight panel products window and doors of metal products asbestos boards gypsum board wood plastic etc.
用于混凝土墙板、板、风管道的防水密封，金属制品、棉板、膏板、料等轻型板材和门窗的防水、封。
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Used for the waterproof sealing on concrete wall panel slab ventilation PIP es the light weight panel products window and doors of metal products asbestos boards gypsum board wood plastic etc.