Among the methods, the one with chemical cleaning solution which is oil soluble can satisfy the requirements for the old Ke-Du Pipeline cleaning.
从中优选出“原油清管加油溶性化学清洗剂”的清洗方法，完全满足了克独老线清洗的要求。
Among the methods, the one with chemical cleaning solution which is oil soluble can satisfy the requirements for the old Ke-Du Pipeline cleaning.
从中优选出“原油清管加油溶性化学清洗剂”的清洗方法，完全满足了克独老线清洗的要求。
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