On October 7, 2020, Petra Acquisition, Inc. closed the transaction. The company has amended the terms of the transaction. The company has signed the subscription agreement with the investor and issued 3,150,000 warrants at a price of $3,150,000 in the transaction. The company has granted over-allotment option to issue additional 315,000 warrants if the option is exercised by underwriters in full or in part on pro-rata basis.