[纤维] GB/T 33617-2017聚酰亚胺短纤维Polyimide staple fiber,PDF |
| |
关于我们|手机版|下载说明|促织网
( 京ICP备14010041号-2|京公网安备11010502056754号 )
GMT+8, 2025-5-1 10:20 , Processed in 0.109375 second(s), 22 queries .
Powered by Discuz! X3.5
© 2001-2025 Discuz! Team.