2. Drill holes and install the workbench.

3, pay-off positioning, check whether the installation size, hole size, position and faucet position are consistent with the design drawings.

4. Cutting: After drawing the marble cutting line, drill a hole in the cutting opening, then cut along the inner side of the drawn cutting line and smooth the trimming.

5. Install the washbasin, put the washbasin into the cutting hole of the marble countertop, correct the position, and draw an outline on the countertop along the outer edge of the washbasin with a pencil.

6. Remove the basin and install the faucet and water as required.