By using vacuum residue from Liaohua refinery as the raw material, several brand heavy paving asphalts have been produced, which meet GB/T15180-94 standard.
应用辽化炼油厂的减压渣油作为原料，研制出符合GB/T15180 94标准的多个牌号重交通道路沥青。
By using vacuum residue from Liaohua refinery as the raw material, several brand heavy paving asphalts have been produced, which meet GB/T15180-94 standard.
应用辽化炼油厂的减压渣油作为原料，研制出符合GB/T15180 94标准的多个牌号重交通道路沥青。
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