The platycodon is yellowish brown, peeled white or yellowish white, hard and not easily broken. With a short head, the taste is slightly sweet and bitter. 2. Intrinsic features. The total saponin content of platycodon grandiflorum reached 11.4%, ranking the highest in the province. As early as 1988, the Sichuan platycodon research and identification meeting, the platycodon grandiflorum index was listed as the standard of Chinese herbal medicine in Sichuan Province.

The platycodon grandiflorum is the mainstay of the Chinese herbal medicine industry in Jixian County. After obtaining the protection of geographical indication products, through continuous investment, the platycodon industry has been upgraded in terms of quality inheritance, planting scale and popularity. The current price of the platycodon is estimated to increase by 15% year-on-year, the annual output value will increase by about 30%, and the domestic market share will reach 5%. The products have been sold to South Korea, Japan and Taiwan. In 2005, the platycodon product was added to the China-Korea Agricultural Trade Fair. In 2009, the platycodon grandiflorum was established by the county government as a key development of Chinese herbal medicines. In April 2012, the development model of the platycodon grandiflorum was included in the 4th China High-Level Forum on China's Cooperative Economy at the 4th China High-Level Forum on Cooperative Economics. In June 2013, the Chinese herbal medicine base of the platycodon grandiflorum was awarded the “National Rural Science Popularization Demonstration Base” by the China Association for Science and Technology and the Ministry of Finance.

Technical requirements for the quality of platycodon grandiflorum 1. Platycodon grandiflorum (Jacq.) A.DC. Second, the site conditions soil type purple soil, the texture is sandy soil, pH value 7.0 to 7.9, organic matter content ≥ 1.5%, soil layer thickness ≥ 40cm. Third, cultivation management Live broadcast: from mid-March to late May, the seeding rate is 30kg/ha to 45kg/ha. 2. 3. Fertilization: Applying organic fertilizer ≥15t/ha. 4. Wipe, topping, and flower removal: After the spring bamboo shoots sprout, remove the excess buds, each staying 1 to 2 main buds, and when the seedling height is 15cm to 20cm, the topping is completed. 5. Environmental and safety requirements: The use of pesticides, fertilizers, etc. must comply with relevant national regulations and must not pollute the environment. 4. Harvesting and processing are harvested in the middle and late October of the next year, and dried to a moisture content of ≤14%. V. Quality characteristics 1. Sensory features: the skin is yellow-brown, peeled white or yellowish white, hard and not easy to break. With a short head, the taste is slightly sweet and bitter. 2. 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 origin of the platycodon can submit an application to the Quality and Technical Supervision Bureau of Sichuan Province for the use of the “Special Mark for Geographical Indication Products”, which will be reviewed by the Sichuan Provincial Bureau of Quality and Technical Supervision and announced to the General Administration of Quality Supervision, Inspection and Quarantine for approval. The detection mechanism of the platycodon grandiflorum is selected by the Sichuan Provincial Bureau of Quality and Technical Supervision in a testing institution that meets the qualification requirements.