久久国产精品夜色,久久久久久夜精品精品免费,99久久久国产精品免费牛牛四川,天天爱天天操,北条麻妃国产九九九精品视频,久久国产成人,国产高清在线视频

1) Appearance : colorless clear liquid
2) Purity: ≥99%
3) Epoxy equivalent weight: 110-130g/mol
4) Water: ≤0.10
5) Packaging: 180kg/galvanized steel drum
6) HS code: 2910900090