Home / Standards / GB/T 1721-2008 GB/T 1721-2008 Active Determination of appearance and transparency of varnishes, boiled oils and thinners 清漆、清油及稀释剂外观和透明度测定法 Standard Type GBT ICS 87.040 CCS G50 Status 现行 Issue Date 2008-06-04 Implementation 2008-12-01 Responsible Dept 中国石油和化学工业联合会 Drafting Unit N/A