国产一区日韩一区,国产首页,国产亚洲成人精品,日日摸天天摸97狠狠婷婷,久久久99国产精品免费,我想看一级黄色毛片,毛片女女女女女女女女女

您的瀏覽器版本太低,將不能正常瀏覽。請(qǐng)升級(jí) Internet Explorer或使用Google Chrome瀏覽器。
如果您在使用雙核瀏覽器,請(qǐng)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