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由湖北黄石市天宫高新技术研究所张友新高级工程师发明的TG20709国际新型永久防水剂(专利申请号:01120110.X),经一年多来在广东、河北、广西、四川、陕西、内蒙、辽宁和越南河内、香港等数万平方米的使用无一渗漏,并通过了6家检测单位分别用不同检测标准的检测,其72h吸水率为0.5%±0.1%;48h吸水量为9%±1%,这两大考核防水剂防水效果的指标大大优于国内外同类型产品。发明人为求证产品质量的真实性,自2001年6月起在《科技信息快报》、《中国技术市场报》、《中国建材报》、《四川科技报》、《山东科技信息报》、《适用技术市场》杂志和因特网上摆擂台至今
TG20709 international new permanent waterproofing agent (patent application number: 01120110.X) invented by senior engineer Zhang Youxin by Huangyou Tianjing High-tech Research Institute in Huangshi City, Hubei Province, after more than a year in Guangdong, Hebei, Guangxi, Sichuan, Shaanxi, Inner Mongolia, Liaoning and Vietnam, Hanoi, Hong Kong and other tens of thousands of square meters without the use of leakage, and adopted six testing units were detected with different testing standards, the 72h water absorption of 0.5% ± 0.1%; 48h water absorption of 9% ± 1 %, These two major indicators waterproof waterproofing test results significantly better than the same type of products at home and abroad. Inventors in order to verify the authenticity of product quality, since June 2001 in the “Science and Technology Information Express,” “China Technology Market News,” “China Building Materials Daily,” “Sichuan Science and Technology News”, “Shandong Science and Technology Information News,” “ Technology market ”magazine and the Internet arena ring so far