久视频精品线在线观看|欧美另类视频在线观看|中文字幕第一页在线资源|欧美精品18乱在线观看|国产一区二区精品久久91|中文字幕Av无码永久专区|a人片亚洲精品有码在线观看|国产成人无码午夜视频在线观看

您的瀏覽器版本太低，將不能正常瀏覽。請升級(jí) Internet Explorer或使用Google Chrome瀏覽器。
如果您在使用雙核瀏覽器，請切換到高速 / 極速 / 神速 核心。
ABOUT
eifang Zhenxing Coking Co., Ltd., founded in 1971 and previously called Shandong Weijiao Group Co., Ltd., is located in Zhuliu Industrial Park, Changle County, Shandong Province, and it is a national large-scale modern enterprise focusing on coal chemical and integrating technology, industry and trade. 12km away from Weifang, the Kite Capital of the World, to its east, 9km away from Changle County, the Hometown of Sapphire in China...
MORE
PRODUCT
Crude benzol
Coke
Coal tar
Food-grade ammonium bicarbonate
Liquid ammonia
NEWS
CONTACT
VIEW