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中国人民解放军9899工厂,于1991年秋开始研制聚氨酯双面复合防水卷材。1992年初投入试生产,产品应用对第一汽车制造厂、长春防水防腐专营处、辽河油田、大庆油田等单位实际应用48000多m~2,经过一年多的使用,防水卷材未发生变化,至今未出现渗漏和不良情况,完全满足了不同环境、不同条件的各种建筑防水工程的质量要求,获得用户好评。于1993年11月10日通过技术鉴定。到会的专家一致认
At the 9899 factory of the Chinese People’s Liberation Army, in the autumn of 1991, it began to develop polyurethane double-sided composite waterproofing membranes. At the beginning of 1992, trial production was put into operation, and the product application was applied to more than 48,000 m2 of the first automobile manufacturing plant, Changchun Waterproof and Anti-corruption Franchise, Liaohe Oilfield, and Daqing Oilfield. After more than one year of use, the waterproof membrane did not change. So far there has been no leakage and adverse conditions, fully meet the different environment and different conditions of the quality requirements of various construction waterproofing projects, and get users praise. He passed technical appraisal on November 10, 1993. Experts at the meeting agreed