The Dongba silkworm cocoon has a white appearance and a natural luster. The cleanliness and cleanliness are 98 points and 94 points respectively. The enamel layer rate is above 46%, the silk length is ≥900 meters, the unwinding rate is over 70%, and the unwinding length is 630 meters. The hairy silk rate is ≥36%, and the 3 meter hanging roughness is ≤2.2 times. The raw silk processed by Dongba silkworm cocoon is more famous for its whiteness and softness.

[Landmark Geography] This area is a subtropical monsoon climate with long sunshine, high temperature and abundant rainfall. The sericulture can produce more than seven batches of seven or eight ounces a year. The area is back to the mountains and faces the river. The terrain is low, the soil is moist, the alluvial silt layer is deep, the soil is fertile, and the trace elements of organic matter are very rich. The mulberry leaves are planted. Mao, mulberry leaves are very rich in nutrition, which greatly meets the needs of silkworm growth and development. Therefore, the silkworm cocoons produced are of unique quality, high silk yield and excellent quality. [Culture Background] Dongba silkworm cocoons have a history of more than 1,000 years. According to the records of Yunan Wenshi, the Dongba species mulberry sericulture began in the Han Dynasty in the north of the Tang Dynasty and moved to the Han River in the Nanjiang River Basin. According to legend, the origin of Dongba silkworm cocoons is related to the famous Liu Zongjie of the Tang Dynasty. During the reign of Emperor Zhongzong of the Tang Dynasty, Liu An’s father was accused of being killed by a villain. Liu An went to live in Yangchun, Guangdong Province, from Xingguo County of Jiangxi Province. He married two men and one woman, the first men died, the third women's volleyball team, named Liu Sanmei (when grown up) People call Liu Sanjie) Liu Sanjie loves to sing and sing folk joy and suffering. Later, due to the government banned songs and the murder of both parents, Liu Sanmei wandered abroad. One day, Sanmei came to Dongbazhu Village on the bank of Nanjiang River in Xining (now Yunan County). The three sisters here saw the clothes of the villagers ruined, the face was yellow and thin, the paddy field was arid, and the large tidal flats were abandoned, and they sang the folk songs sadly, sadly. The song rushed straight into the sky, and was heard by the goddess of the heavens, who sent the weavers to the east of the dam, lowered the cloud head, and passed the silkworm seedlings and the mulberry seedlings to Liu Sanmei. The three sisters opened up a few terraces and planted mulberry seedlings for raising silkworms. Later, the three sisters taught the villagers to plant mulberry and silkworm silk. The silk cloth woven by Liu Sanmei made clothes, and it was very beautiful to wear. The villagers all tried to imitate it. Later, when Sanmei went to Guangxi to sing songs, she also took several Dongba silks. After the famous poet Song Zhiwen joined the army, he went to the Dongba area to inspect the scenery and lived in poetry. Before the liberation, the quality of silkworm cocoons in the Dongba area was better than that in the surrounding areas, and the prices were correspondingly high. Therefore, local people and businessmen are used to calling it Dongba Cocoon. [Cultural Accumulation] After the famous poet Song Zhiwen joined the army (656-710), he came to the Dongba area to inspect and touch the scene, and the poem was a poem: the village was tied to the mulberry field, and the ten fingers flew like a string. Legend has it that Song Xian Liu Sanmei, Dongba Cave has a sleep with silkworms. [Brand Building] The Yunan County Party Committee and the County Government have formulated an industrial policy to implement the “Northern Fruit South Sang” in the county and vigorously develop the sericulture industry. In order to enlarge and strengthen the traditional industries, Dongba Town has successively introduced funds from Shandong and Zhejiang Province, and has produced Lu Yue Wanfang Silk Co., Ltd. and Yunan County Dongsheng Silk Refinery Factory. Specifically responsible for the acquisition, processing and sales of Dongba Cocoon. (The implementation of the minimum protection price acquisition for farmers) This "trade, industry, agriculture, and science integration" business model not only effectively guarantees the quality of products, but also enhances the enthusiasm of farmers, the role is very prominent.

Technical requirements for quality of Dongba silkworm cocoons (1) Environment. Soil, air and water sources are non-polluting and meet the requirements for planting mulberry and silkworm. (2) Cultivation of mulberry trees. 1. Varieties: Yuesang No. 11 and Kangqing No. 10. 2. Site conditions: The soil is sandy loam with a pH of 6.5 to 7.0 and an organic matter content of ≥1.5%. 3. Planting time: spring planting, summer planting or autumn planting. 4. Planting density: paddy field ≤ 82,500 plants / hectare, dry land ≤ 90,000 plants / hectare, low dry. 5. Fertilization: Apply organic fertilizer ≥12 tons per hectare per year, and the organic matter content of fertilizer is ≥20%. (3) Silkworm rearing. 1. Variety: Liangguang 2nd. 2. Feeding time: from late February to late November. 3. Leaf standard: Ants of silkworms adopt the second to third leaves, small silkworms adopt the fourth to eighth leaves, and large silkworms use mature leaves or strips. 4. Feeding: good mulberry and full food. 5. Captain: It is forbidden to use branches, bamboo branches, straw, etc. directly as caps. 6. Picking: 6 to 7 days after the silkworm is cooked. (4) Silkworm cocoons are dry. Bake to dryness within 3 days after silkworm harvesting. (5) Quality characteristics. 1. Sensory features: white, with natural luster. 2. Physical and chemical indicators: the rate of getting on the train is ≥96%, the unwinding rate is ≥65%, and the cleanliness is ≥93 points. 3. Safety requirements: The product safety index must meet the relevant regulations of the state for similar products.

Apply to：
Producers within the protection scope of Dongba Cocoon's geographical indication products may apply to the Quality and Technical Supervision Bureau of Yunan County, Guangdong Province for the use of the “Special Mark for Geographical Indication Products”, which shall be examined by the Guangdong Provincial Bureau of Quality and Technical Supervision and be reviewed by the General Administration of Quality Supervision, Inspection and Quarantine. Announcement approval. The legal inspection agency of Dongba Cocoon is designated by Guangdong Quality and Technical Supervision Bureau.