国产精品 精品国内自产拍|亚洲福利精品久久久久91|精品亚洲成a人在线观看青青|2023国产精品日韩亚洲

　　It can be used as a plasticizer, lubricant additive, and stabilizer, as well as an intermediate for pesticide insecticides such as "Futianong" and "Fenfencarb", and as a raw material for the pharmaceutical analgesic agent phenthiazide.