BTSE is an exchange offering futures, spot, and OTC services. On the BTSE platform, you can withdraw BTC balances as LBTC, and any LBTC you deposit is added to your BTC balance. By depositing BTC on the platform and withdrawing as LBTC, you can effectively convert your BTC to LBTC at a 1:1 ratio (minus withdrawal fees).
Step 1: Go to the Wallets tab.
Step 2: Deposit BTC to your BTSE account.
Step 3: After the BTC has arrived, select BTC from the Withdraw menu.
Step 4: Select Liquid from the pop-up window shown below.
Step 4: Enter a Liquid address from your Liquid wallet, enter a withdrawal amount, and click Confirm.
Step 5: The LBTC should arrive in your Liquid wallet within a few minutes.