Panshan County, Panjin City, Liaoning Province is the largest producer of crabs in China, and is known as the crab. The Panjin River crab is born in the sea, fresh in the fresh water, fresh and tender, with unique flavor and rich nutrition.

The scientific name of Chinese mitten crab, the northern name of river crab, commonly known as crab in the south, is an arthropod, crustacean, decapod, creeping suborder, short-tailed, crab, Eriocheir, is a famous freshwater crab in China, in China's crabs have the most production. Panshan County, Panjin City, is the largest producer of crabs in China. It is known as the “crabs” and this has a direct relationship with the geographical environment of Panjin. The growth characteristics of Panjin River crab are: sea water, fresh water, long. Panjin faces the Liaodong Bay in the Bohai Sea. It has vast sea areas and abundant sea water, which enables the river crabs to “life”. At the same time, the inland waters and abundant water resources make the river crabs “long”. There is a reputation of Liaoning u0026quot;Southern Wildernessu0026quot;, and the swamps and ponds in the territory are dotted with large and small rivers, and millions of acres of puddles in Qiangtang. The more important geographical condition is that there are more than 20 small and medium-sized rivers in Panjin City, and the articles are connected with the Bohai Sea, so that the river crabs are free and unobstructed. The basic characteristics of Panjin River crab belong to the higher crustacean, belonging to the arthropods, crustaceans, decapods, creeping suborders, short-tailed species, genus Crab, subfamily, and genus of the genus Panjin City. The main feature of Panjin River crab is that the body is nearly round, the head breast is flat, and the width is slightly longer than the length. In the stage of young crabs, the carapace is less spotted, the body is black and black, and the abdomen is silvery white. When the crab is formed, the back of the body is black or yellow and the abdomen is white. There are 4 teeth, the middle two teeth are sharp, and the angle of the u0026quot;Vu0026quot; glyph is an acute angle or a right angle less than or equal to 90°. The fourth side tooth is smaller and the end of the long section is less than the eyelid line. The bristles are slender, dense, light brown or yellow. The head breastplate is often dark red after cooking. Living habits Panjin River crab habitats are divided into two types: cave dwellings and seclusion. Each crab cave has less than one dwelling. Panjin River crab is an omnivorous animal. It mainly consists of plants such as water plants and fish, shrimps, aquatic insects and worms. However, it also eats humus and debris, animal carcasses and bait. When food is scarce, it will be similar, or swallowed. The eggs that I have hugged. However, in general, it is easier to use plant-based foodstuffs, and often constitutes the main component of the crab stomach. Although the Panjin River crab grows in the freshwater river, it is born in the shallow sea where the brackish water merges. After the Mid-Autumn Festival every year, the river crabs rushed to the sea in a group, stalking, spawning, and hatching in the shallow sea. At the end of the spring and early summer, groups of young crabs rushed up the river and continued to grow in fresh water. For the crab. Nutritional Value Panjin River crab meat is fresh and tender, with unique flavor and rich nutrition. It has different taste from the southern crabs. Crab meat not only contains vitamin A, protein, sugar, calcium, phosphorus, iron and other nutrients, but also has the medicinal effects of nourishing the qi, nourishing the stomach, clearing the meridians and so on. Panjin River crab has a variety of food methods, or steamed or boiled, can also produce halogen, dipping sauce, made crab tofu, drunk crab, its taste is more delicious. The Panjin River crab is the most fat in the Mid-Autumn Festival every year. Sitting on the crab field, steaming crabs smells the rice scent, which makes people happy.

Quality requirements for quality of Panjin River crab (1) Source. Eriocheir sinensis in the Liaohe River system. (2) Breeding conditions. The culture water environment meets the requirements of GB11607-1989 "Fish Water Quality Standard", and the soil quality of the culture pond conforms to the national GB 15618-1995 "Soil Environmental Quality Standard". The soil has an organic matter content of 10 to 20 g/kg, a total nitrogen content of 0.5 to 1.5 g/kg, a total phosphorus content of 0.2 to 0.8 g/kg, a total potassium content of 0.1 to 0.4 g/kg, and a pH of 7.5 to 8.6. The salt content ranges from 1‰ to 4‰. (3) Parents. The breeding crab has a strong body, strong vitality, complete appendages, no injuries; female crabs weigh more than 90g / male, male crabs weigh more than 110g / more. (4) Seeds. The specifications are neat, the body is strong, the reaction is quick, the body surface is smooth, the appendage is complete, and there are no parasites. The large-eyed larvae used for the cultivation of crabs must be crab seedlings cultivated by the natural ecological method of the professional farm home soil pool with the production license of crab seedlings in Panjin. The antibiotics and other prohibited drugs prescribed by the state are not used in the whole cultivation process. Specifications range from 150,000 to 300,000/kg; crabs for crab farming, sizes 80 to 200/kg. (5) Adult crab farming. 1. Disinfection of Qingtang: In the end of March, disinfect the pond bottom with quicklime (200kg/ha) or bleaching powder (20-30mg/L). 2. Crab release: The crabs are stocked in the upper and middle of April. No more than 6,000 crabs per hectare, and can be used with filter-feeding fish such as crickets and crickets. 3. Feeding: It is mainly based on aquatic natural bait, with plant-based feed or compound feed such as soybean meal and corn. 4. Water quality regulation: Regularly use quicklime to regulate water quality, kill germs and keep water quality indicators stable. Water depth 0.1 to 2 meters, transparency ≤ 30cm, DO (dissolved oxygen) ≥ 4mg / L, pH value is controlled at 7.5 to 8.6. 5. Fishing time: not less than 140 days. Fishing after mid-September. 6. Product specifications: male crab ≥ 110g / only, female crab ≥ 80g / only. (6) Quality characteristics. 1. Sensory indicators: (1) Taste: It has a unique taste of fresh, fragrant, cool and fat. (2) Vitality and body color: physical health, strong vitality, mostly dark brown or dark gray. (3) Specifications and body type: The body type is fat, the head breastplate is relatively thick, the meat is dense, and the carapace is hard and shiny. Crab yellow sauce is purple or bean paste, and the cream is milky white. 2. Physical and chemical indicators: (1) Male crab: crude protein ≥ 16%, crude fat ≥ 9%, fatness ≥ 0.58g / cm3, gonads percentage ≥ 2.5%. (2) Female crab: crude protein ≥ 17%, crude fat ≥ 11%, fatness ≥ 0.50g/cm3, gonads percentage ≥ 6.5%.

Apply to：
Producers within the scope of protection of Panjin River Crab's geographical indication products may apply to the Panjin Quality and Technical Supervision Bureau for the use of the “Special Mark for Geographical Indication Products”, which shall be approved by the General Administration of Quality Supervision, Inspection and Quarantine.