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Revival method for removing metal from the catalytic cracking catalyzer by using solid phase vulcanizing method
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Process for preparing high-basicity sulfonate additive
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Emulsifying-type material feeding method for catalytic cracking of heavy oil
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Finishing oil for front-rear spinning short polyester fibre
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Process for preparing high-activity polyisobutylene
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Hydrorefining catalyst and its preparing process
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Process for preparing low-molecular polyisobutylene
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Composite decarbonizing liquid
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