What are the differences among countertop, built-in, and sink dishwashers?

Household dishwashers are generally classified into three types: built-in, countertop, and sink models.
The differences among countertop, built-in, and sink dishwashers are as follows:
1. Countertop dishwashers have a capacity of 4 sets to 5 sets, are easy to install, and do not require cabinet modifications. They are suitable for renovated homes and families of five or fewer, allowing for one wash per meal, which is more hygienic;
2. Sink dishwashers also have a smaller capacity, usually around 4 sets. They occupy both countertop and under-sink space;
3. Built-in dishwashers are the mainstream product, offering larger capacities, generally accommodating more than 8 sets.