Luolongyu, special product of Luolong County, Changdu City, Tibet Autonomous Region. According to legend, "Luolongyu" is a superior tribute of local governments and luxuries in Tibet. The Tibetan saying goes: "On the front of the mouth is the sweetness of sugar cane, but you have to count on the same kind of honey." The dragonfly is made from dried green sorghum grown on the Qinghai-Tibet Plateau. It is a Tibetan nation for thousands of years. One of the traditional staple foods.

Luolong County has beautiful scenery and fertile land. It is one of the commodity grain base counties in the Tibet Autonomous Region. It is famous for its high-quality green barley. The county has established a high-quality barley production base of nearly 60,000 mu, which is known as the “Tibetan granary”. The people of Luolong County produced the famous Luolongyu through the water mill, and most of the Luolongyu on the market now come from the Luozong specialty product development company. Here, cleaning, frying, peeling and other processes are all done mechanically. The company adopts the business model of “company + base + farmer + market”, which allows many poor people to participate in poverty alleviation.

Technical requirements for quality of Luolong 一 I. Requirements for raw materials 1. Varieties: Navy Qing 2000, Navy Blue 320 and local white peony. 2. Site conditions: 3600m to 4200m above sea level, soil thickness ≥60cm, soil pH 6.5 to 8.2. 3. Cultivation management: sowing time is from mid-March to late April, seeding volume is 200kg to 270kg/hm2 The annual application of farmyard manure ≥ 3t / hm2, harvested from late July to late August. 4. Quality requirements: 1000-grain weight 45g to 50g, moisture content (after drying) ≤ 12%. 5. Environmental and safety requirements: The use of pesticides, fertilizers, etc. must comply with relevant national regulations and must not pollute the environment. Second, processing (A) process: material selection → clear → Run Mai → roasting → peeling → grinding → finished products → packaging → storage. (2) Processing points: 1. Run wheat: make the moisture content of the raw materials reach 14% to 16%. 2. Roasting: The frying temperature is 380 ° C to 420 ° C. 3. Milling: using traditional water mill grinding. Third, the quality characteristics (A) sensory characteristics: the color is grayish white, powdery, uniform color, with a unique green buckwheat flavor, sweet taste. (2) Physical and chemical indicators: moisture content is 7.5%~8.9%, crude protein content is 9%~10%, and crude fat content is 2%~3.5%. (3) Safety and other quality technical requirements: Product safety and other quality technical requirements must comply with relevant national regulations.

Apply to：
Producers within the scope of the production area of ​​Luolong can submit an application to the Changdu Quality and Technical Supervision Bureau for the use of the “Special Mark for Geographical Indication Products”, which will be reviewed by the Quality and Technical Supervision Bureau of the Tibet Autonomous Region and announced to the General Administration of Quality Supervision, Inspection and Quarantine for approval. The testing agency of Luolongyi is selected by the Quality and Technical Supervision Bureau of Tibet Autonomous Region in the testing institutions that meet the qualification requirements.