ASTM F2019-20 用紫外光固化法就地固化的玻璃钢(GRP-CIPP)的拉拔安装修复现有管道和导管的标准实施规程.pdf文档页数:13文档大小:5.96MB文档格式:pdf This international standard was developed in accordance with internationally recognized principles on standardi...
在线咨询: QQ交谈
邮件:admin@qq.com
工作时间:周一至周五,9:30-18:30,节假日休息