Company Update Clean Science and Technology Ltd - 543318 - Commencement Of Commercial Production Of 2,5-Dihydroxy-1,4-Dithiane (DHDT) By … BSE India Pursuant to Regulation 30 of the SEBI Listing Regulations, 2015 , Clean Fino-Chem Limited , Wholly Owned Subsidiary of the Company has started production of DCC on Monday, 30th December,2024.