Ham is graded, including super, first, second and third grades. It is necessary for knowledgeable people to insert a label to judge the quality of ham. The tag is made of bamboo, like an awl. A ham has three different parts, and each sign is in a different part. According to the different positions, it is divided into three signs: upper, middle and lower. Requirements for super legs: the claws should be bent, the ankles should be thin, the leg shape should be full like a leaf, the thickness of fat should not exceed 2 cm, and all three signs should have a good fragrance. Requirements for first-class legs: two of the three signs should have a good smell, but none of the three signs should have an odor. Requirements for secondary legs: no odor. Requirements for three-level legs: one sign smells bad. Super ham and first-class ham are covered with red rings, second-class ham with yellow rings, and third-class ham without rings. All three kinds of hams are stamped with Chinese gallnut ink. However, some hams are shoddy, so it should be better to go to a regular place when buying ham, such as a famous supermarket. Some famous ham shops are also better, such as Bandung Ham Shop. If it is a general store, it depends on skill and luck.

There are also two kinds of products made of salted legs, one is called white board legs, which means Jinhua ham without seal (if it is made according to the standard). This kind of products will be stamped as Jinhua ham. Generally, their quality is not high, and they are likely to be incompletely fermented (semi-finished products) or have an odor. But it won't be too bad, and it will still get by (just look at it and you will know that you have thrown away the hopeless ones). The other is called salted dried leg, which is the product of air-dried salted leg without fermentation. Because this kind of leg can be made all year round, it is very likely to spray dichlorvos when there are many flies in hot weather. The color of normal ham is the dark red of roses, while the salted dried legs are bright red, just like the red on the girl's face, and it is softer than ham. Of course, according to the standard, salted dried legs should also have no rings or seals.