This is my erc20 wallet address that holds CET 0xd728138dc23378660698a4b9b37273948eff4187
I would like to send collateral with the repayment.
Reason: Cet is red now over 4% of its ATH and the lended btc will be traded now to CET as additional.
When you will send repayment why you will send collateral. You should give collateral while taking loan. And collateral will be refund to you when you will repay the loan.