This complaint is commonly referred to as “leaking” sink.
Water droplet found under the sink is due to condesation.
It happens when the air inside the kitchen cabinet is warmer than the air outside.
The greater the temperature difference, the risk of condensation is higher.
So, please do NOT defrost your frozen food on your sink
A classic example is to take out a can drink from the fridge and leave it on the table for 10 minutes. Your table will be wet due to condensation from the can drink.
Do NOT defrost frozen food in your kitchen sink
It is important to note that condensation can happen to all brands and types of sinks even even in granite sinks and stainless steel sinks with cosmetic undercoating paint. Installing trendy ventilations rings (top photo) on your cabinet door is good method to create ventilation inside your kitchen cabinet .
This will ensure the air temperature inside the kitchen cabinet is not too warm than the air temperature outside.