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BeijingZijingshiFineChemicalTechnologyCo.Ltd.(ZJS)wasfoundedin1999,mainlyengagedinengineeringprojects,suchascarbondioxidesuper-criticalextraction,environmentalprotection,sulfonationbygaseousSO3(sulfurtrioxide),surfactants,andotherfieldssuchastechnologydevelopment,technologytransfer,technicalconsultation,engineeringdesign,technicalservices.