[国外标准] API STD 20L-2018 Qualification of Polymeric Seal Manufacturers for Use in the Petroleum and Natural
[国外标准] API SPEC 20F-2018 Corrosion-resistant Bolting for Use in the Petroleum and Natural Gas Industries (S
[国外标准] AATCC 20A-2020 Test Method for Fiber Analysis_ Quantitative
[云南地方标准] DB5333/T 20-2021 怒江峡啦
[计量检定规程] JJG 1182-2021 20Hz~1kHz矢量水听器
[团体标准] T/CCOA 20-2020 火锅用油
[河北省地方标准] DB1305/T 20-2021 金银花种植技术规程
[团体标准] T/CCPIA 087-2021 20%氟铃脲 辛硫磷乳油
[团体标准] T/CCPIA 076-2021 20%呋虫胺 螺虫乙酯悬浮剂
[团体标准] T/CCPIA 064-2021 20%呋虫胺可溶粒剂
[团体标准] T/CCPIA 011-2019 20%苄嘧磺隆 乙草胺可湿性粉剂