First, look at the color
Fresh pork is white, the lean part is light red or bright red, evenly colored with a luster, and the fat part is white and thick.
Second, look at the texture
Fresh pork has a texture that is marbled, you can clearly see the lines, and that is the sign of fresh pork.
Third, smell it
Generally, fresh pork has a fresh and savory smell, which will not change after freezing and transportation. Unfresh pork will have a smell of ammonia, so you must smell it.
Fourth, touch the surface
When buying, you should touch the surface of the pork. The surface of fresh pork is not sticky, and it feels slightly dry. The surface of frozen pork may also be slightly moist, but it will not feel sticky.
Fifth, press it
When buying, press the surface of the pork with your finger. Fresh pork is elastic, and the meat will bounce back quickly after being pressed, without leaving a dent. If there is a dent and it does not bounce back quickly, then that piece of pork is not fresh.