针对石化废水污染成分复杂、可生化性差的特点，研究了电气石对生物接触氧化法处理石化废水效能的影响。
Aiming at the complexity and poor biochemical degradability of petrochemical wastewater, the effect of tourmaline on bio-contact oxidation method was investigated.
可安装在易燃易爆的石化企业、油罐区、输油码头、船舶等场所，作为远距离扑救油类火灾及消防冷却的有效设备。
As an effective equipment for distant putting out oil fire and cooling, it can be fixed in flammable and explosive petrochemical industry, oilcan zone, oil handling terminal, wharf and so on.
购货合同中列名的随设备购进的部分塑料件、橡胶件、陶瓷件及石化项目用的管材等，也可退税。
For purchased plastic ware, rubber ware, ceramic ware and tube for petrochemical industry concluded in contract, added-value tax can also be returned.
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