Specific Tolerances are used for specific goals in your PCB Project. Should you require them, you can indicate that in the order details in the calculator.
Of course this has to be visible in your PCB data.
We will analyse your data accordingly and report back in case your requirements should not match our manufacturing capabilities or we need to introduce extra costs need to achieve your request.
Furthermore, please note that we produce our boards according to the latest industrial standard IPC A-600 (x) Class II.
For more information please see our PCB Design Guidelines.