Chinese forest frog, also known as "snow 蛤" "has 蟆 蟆", is a wild and vulnerable species that is unique between China and Baishan. Among all the forest frogs in China, especially the forest frogs in the northeast forest area are large and strong, with high reproduction rate and large oil production, which is the best of the forest frogs. Rana sylvestris combines medicinal, tonic, beauty and beauty effects. With its unique medicinal value and nutritional value, it has become the most economical value of frogs. It gradually walks out of its hometown and enters people's field of vision. The essence of it - Rana frog oil (Rana frog placenta) is called "soft gold" by more and more people because of its rich nutrition and high price.

Technical requirements for iron quality "China Rana" oil quality (1) breeding environment. The cultivation of “China Rana” must be carried out in a place with high terrain, smooth air and good drainage. The soil is protected from pollution and effective anti-rat and anti-escape facilities are adopted. The breeding site must have sufficient and clean water. (2) Kind of frog. "Chinese Rana frog" with pure variety, individual hypertrophy, no damage, strong vitality and strong fertility rate as a species frog. (3) Spawning and hatching. Spawning and hatching need to be carried out in the hatchery, the water depth is 30 to 40?, and the water temperature should be controlled at 8 to 13 °C. (4) Feeding. After the spawning hatching, it takes 35 to 40 days to feed, in order to enter the metamorphosis period, to ensure comprehensive nutrition. (5) Rearing of young frogs to adult frogs. After the metamorphosis, they landed ashore from the metamorphic pool and began to live on land. The bait is mainly in the sterile fly area and the yellow mealworm. With the growth of the frog body, feeding cockroaches, yellow mealworms and sterile fly larvae are fed alternately. After 2 to 3 years of wintering and rearing, the frogs are formed. Capture every fall. The average weight of adult frogs is not less than 30g. (6) Harvesting and primary processing technology. Hang a string of Rana sinensis in a cool and ventilated place, and keep a distance of about 2cm between the frogs. The distance between the string and the string is about 10 to 20cm. This method takes about 10 days to dry. The dried frogs are softened to facilitate oil extraction. Put the oil block in a well-ventilated place and dry it in the sun. After it is dry, carry out quality inspection, seal the package, store it in a cool, dry and ventilated place to prevent insects. (7) Quality characteristics. The color of the Chinese "Rana frog" oil is white and yellowish, crystal-like, irregular in shape, curved and overlapping. The length is generally 2 to 5 cm, the thickness is 1.5 to 5 mm, and the hand feels slippery, warm water. After soaking, the volume expansion is more than 10 times that of the original.

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Producers within the scope of protection of the “China Rana” oil geographical indication product may submit an application to the Tieli Quality and Technical Supervision Bureau for the use of the “Special Mark for Geographical Indication Products”, which is approved by the General Administration of Quality Supervision, Inspection and Quarantine.