xxx国产在线,蜜臀av夜夜澡人人爽人人,久久一区国产,黑人性猛爱xxxxx免费,国产一区欧美日韩,少妇毛片一区二区三区免费视频,久久久亚洲国产精品

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。
o-Phthalic anhydride
Product
2020-03-28
Product Presentation:
Production capacity over 250,000 tons/Y,High-quality raw oil for the production of carbon black.JZC(JFE) unique production method,assuring steady supply.Top and stable quality.
 
Use:
The reinforcement materrials added in tire and rubber oproducts to increase abrasive resistance are widely used in the production of carbon black.The CB oil produced by our company is processed into high-quality carbon black and then made into rubber prod