精品伦精品一区二区三区视频,999精品嫩草久久久久久99,黄网亚洲,最近中文字幕视频2019,re99热,变蝇人1未删减完整版在线观看,在线电视剧观看

您的瀏覽器版本太低,將不能正常瀏覽。請升級 Internet Explorer或使用Google Chrome瀏覽器。
如果您在使用雙核瀏覽器,請切換到高速 / 極速 / 神速 核心。
Naphthalene
Product
2020-03-28
Product Presentation:
Production capacity over 60,000 tons/Y,High-quality raw materials for concrete water reducing admixture and refined naphthalene. JZC(JFE) unique production method,assuring steady supply.Top and stable quality.
 
Use:
Concrete water reducing admixture widely used in concrete water reducing admixture and other building materials,with high customer valuation.It can also be used in refined naphthalene,dye and plasticizer processing, having good use effect.

Index Name Unit GB/T6699-1998
Excellent grade First grade Up to grade
Exterior   White, reddish white or yellowish white. Powder crystal or flaky crystal.
Crystallization point ≥78.3 ≥78.0 77.5
Nonvolatiled matter wt% ≤0.04 ≤0.06 ≤0.08
Ash wt% ≤0.01 ≤0.02 ≤0.02