Without doubt, the cavity sink is considered an indispensable equipment in the construction or repair works to ensure the safety of workers and patients in the hospital. However, to avoid buying counterfeit, it is necessary for the consumers to have some basic knowledge of how to identify the quality of a cavity sink. The way to identify the cavity sink includes the origin, quality certification, quality label, and product appearance. The wellarm sink often has a clear label, an anti-counterfeit label, the construction ministry’s safety standards or trusted certification. Moreover, the criteria to identify the quality of cavity sink include the materials, durability, rust prevention, and stress resistance. The high-quality sink products are the ones which have firm construction and do not have scratch or rust in the first use. In addition, it is also possible to ask about the manufacturer and the supplier to avoid gaining low-quality products. In conclusion, identifying the cavity sink is an essential step for selecting the right and high-quality safe product. If the consumers are still in doubt, they should contact the real store and ask for the expert to gear the maximum safety for their works.