Here's the maximum position size vs. leverage for a few symbols in our standard exchange offer PB-USDT-EX.
For instance, the total number of opened BTCUSD contracts is 5 for the 200x leverage account, 10 contracts for the 100x leverage account and 50 contracts for 10x leverage.
To check the remainder of the symbols limits, click on the pen icon next to your account's leverage in the account details section.