How to Inspect the Ceramic Sink that I have Purchased?

Don’t know how to inspect your newly bought sink? To check it from the following points is enough to avoid wrong or defective ceramic sinks.
 
1. Check the appearance roughly. Are the color, shape, and material correct?  
2. Measure the exterior and inner sizes of the ceramic sink. Some differentials in sizes are visible by sight. However, some invisible but crucial differentials need to be figured out through accurate measurements.
3. Any defects on surface, corner, drain hole, etc. Don’t miss any parts of the sinks！
4. Accessories. Usually, accessories and instructive manuals are packed together with the ceramic sink. You should check if the complete accessories are in the package.