See if the sink is 304, not the price. 304 is more expensive than 20 1, but the market price is not accurate. If you want to know whether 304 is the best product tested with liquid medicine, there is a simple way to see what brand is printed. Generally, our factory will use SUS304 to identify the sink marked with 304. The other SVS304 DUS304, that's all fake. That is 20 1.