Generally speaking, this kind of seal is not easy to clean. If you feel bad, you can peel off the skin with a knife. The quarantine seal on pigskin is harmless to human body if eaten.

But it's not attractive and makes people lose their appetite. If it must be removed, you can go to the hospital to buy a small bottle of hydrogen peroxide and apply it to the seal for 20 minutes, bleach it until it is colorless, or evenly apply edible alkali to the seal. After a few hours, except for the deeply printed part, most of the traces of the seal will disappear. If it's still not clean, scrape that part off with a knife.

Raw pork must have "two certificates and two chapters" before it can be listed.

"Two certificates and two seals" include meat quality inspection certificate, animal product quarantine certificate, meat quality inspection seal and animal product quarantine seal, all of which are indispensable.

There are two kinds of seals, blue and red, which used to be roller printing, but now some of them have been changed to needle printing. The edible blue (wisteria juice) or edible red is dissolved in alcohol and covered on the back of pigs, which is the main sign to identify whether pork is "black" pork slaughtered privately.

Extended data

Veterinary inspection seal: raw pork with good quality and suitable for eating after inspection, stamped with a circle, with a diameter of 5 ">; 5 cm, horizontally in the middle; Veterinary examination; Four characters, and marked with the seal of year, month, day and animal type.

High-temperature stamp: the meat that has been identified by the quarantine department and must be treated according to the specified temperature and time before it can be sold shall be stamped with 4 ">; 5 cm equilateral triangle; High temperature; A two-word seal. Raw pork with this seal cannot be sold directly in the market. ?

Edible oil stamp: raw pork that cannot be sold or eaten directly, and must be refined into edible oil as soon as possible, with a stamp length of 4 ">; 5CM, 2CM wide, with the middle; Edible oil; Three-character printing.

Industrial oil seal: raw pork that can't be sold or eaten directly and can only be refined into industrial oil as determined by the quarantine department. It is covered with an ellipse with a length of 8 cm and a width of 3 cm, and there is one in the middle; Industrial oil; Three-character printing.

Destroy the seal: the raw pork that has been determined by the quarantine department to be prohibited from being sold and eaten is stamped with the seal of destruction; T-diagonal, line length 6 cm, with &; ; Destroy; A two-word seal.

Reference source: Baidu Encyclopedia: Quarantine Seal