What is Refinery Oil Sludge, Why is it Toxic, and How is it Disposed Of? Vast amounts of refinery oil sludge are produced from the process of crude oil refining. Refinery oil sludge contains toxic ...
BEIJING, July 30, 2020 /PRNewswire/ -- Recon Technology, Ltd. (NASDAQ: RCON) ("Recon" or the "Company"), today announced that its 51% subsidiary, Gan Su BHD Environmental Technology Co., Ltd ("Gan Su ...
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