...供如下服务 » In B during the consultation period, Party A to provide the following services 蒸汽裂解装置 » Steam cracker 今天是中秋节，我们去了奶奶家和以往一样，回家的路上我闻到了熟悉的香水味，那是他的味道，我贪婪的呼吸着那气味。
Propylene and ethyleneare the major raw chemicalmaterials for organic chemical industry, which are mainlyderived from hydrocarbon steamcracking process.