Home / Standards / GB/T 22857-2009 GB/T 22857-2009 Active Mulberry thrown silk on cones 筒装桑蚕捻线丝 Standard Type GBT ICS 59.080.20 CCS W42 Status 现行 Issue Date 2009-04-21 Implementation 2009-12-01 Responsible Dept 中国纺织工业联合会 Drafting Unit 中国纺织工业联合会