Why did Tianguan go bankrupt?

International oil prices fell off the cliff. According to the relevant information of Tianguan Company, Tianguan went bankrupt because of the cliff-like decline of international oil prices. Due to the cliff-like decline of international oil prices, market changes and the superposition of policy factors, Tianguan ethanol in Henan suffered huge losses year after year and was seriously insolvent until bankruptcy and reorganization.