一区二区伊人久久大杳蕉_天天摸天天做天天爽_欧美亚洲综合插插图视频_国产极品翘臀在线观看

Product name: Trimellitic anhydride acid chloride
CAS NO.: 1204-28-0
Molecular formula: C₉H₃ClO₄
Molecular weight: 210.57
Appearance: white crystal powder
Quality indicators: content: 99% melting point: 66-69°C
To use: Dental composite resin material.
Packaging: 25kg net weight carton packaging.