天天日天天爽,久欠精品国国产99国产精2021,国产精品亚洲一区二区三区喷水,亚洲精品黄片视频在线观看,久久国产精品国产精品

Methyl dichloroacetate % ≥99.5; 
Methyl chloroacetate % ≤0.2; 
Methyl trichloroacetate % ≤0.3; 
Moisture ≤0.1; 
PH value5—6