Petrol filling stations with vapour recovery system to display certificate 汽体回收油站必须明显展示证书
2.
Standard test method for dimer trimer of chlorotrifluoroethylene recoverable oil and grease and nonpolar material by infrared determination 用红外线测定法测定三氟氯乙烯可回收油和油脂和非极性材料的二聚物三聚物的标准试验方法