summary Astragalus is a semi-wild and semi-family species, which has an annual sales volume of nearly 10,000 tons and is one of 40 species of major medicinal herbs. Astragalus perennial herb, the general family Astragalus can be harvested in 2 years. Warm temperature and climate, hi light, drought-resistant, cold-resistant, scared, afraid of water. Suitable for neutral or alkaline, loose soil, fertile soil growth, avoid continuous cropping. In general, Huanghua has a strong adaptability, and natural disasters have little effect on it. Changes in the home-grown production areas are also subject to fluctuations in price. The resources of Astragalus membranaceus are widely distributed. Most of them were wild before, and they were distributed in northern provinces. With the increase of dosage and disorderly excavation, the wild yield gradually failed to meet the market needs. Since the 1990s, the type of yellow locust has gradually developed. Gradually formed four major production areas in Shandong, Shanxi, Shaanxi and Gansu. The Shandong-producing area of ​​the Huangpi family is an old producing area. It has been planted for many years and has a lot of diseases and single crops. The Salvia miltiorrhiza is a kind of planting area with high yields, good prices and high incomes. Farmers have increased salvia and food. Planting area. The domestic production area of ​​Huangpi in the Midwest is a newly developed production area, mainly concentrated in Shaanxi Shangluo, Shanxi Yuncheng, Xiangfan area, and the surrounding counties and cities of Gansu and Luxi. Home-breeding species are easy to plant, management, excavation, and drying are all relatively easy. The cost, labor, and time for input are relatively small. The production process is relatively simple. The people are happy to plant and the planting develops rapidly. Home products can be harvested in 2 or 3 years. Both spring and autumn can be excavated, generally concentrated in the mid-October of the fall. Mu 30-40 kilograms of seedlings, plain area yield of about 150 kilograms; and Shanxi and Shaanxi production areas high, large temperature difference between day and night, most parts of the drought, is more conducive to the growth of the yellow buckwheat, which yield up to 300-400 kg. The clinical application of Astragalus has a history of more than 2,000 years. It is still the right medicine for heat, dampness and detoxification. In addition to traditional Chinese medicine formulas, it is widely used as a raw material for proprietary Chinese medicines. According to the statistics of the first part of the “National Chinese Medicine Product Catalogâ€, there are 45 kinds of 66 kinds of honeydew pills used for jaundice; 46 kinds of 64 kinds of tablets with jaundice; 36 kinds of water pills have 25 kinds of jaundice. In many areas, Scutellaria baicalensis or Astragalus membranaceus is used as a raw material for the extraction of safrole and astragalus, which is a new development approach. Foreign materials reported that jaundice agents can cure arteriosclerotic hypertension and neurological dysfunction in autonomic nerves; and can also eliminate hypertension-induced headaches, insomnia, and chest tightness. The application of Huang Hao has been increasingly valued at home and abroad, and has great potential for development and utilization. In addition to the normal pharmaceutical feed, the recipe is mainly used for extraction. A part of home-breeding Astragalus is used for the processing of decoction pieces and more for the extraction of safrole from pharmaceutical plants. The development and promotion of proprietary Chinese medicine "Shuanghuanglian" has led to a significant increase in the amount of home-made Huangqi. At the same time, due to the year-by-year reduction in wild resources, the amount of new production of wild astragalus is declining year by year, and the contradiction between its lack of production is becoming increasingly prominent. The shortage of wild astragalus can only be compensated by domestic species. Therefore, the shortage of wild resources is gradually reducing the contradiction between the supply of home-grown jaundice exceeding demand. Therefore, the high price of wild Astragalus will naturally drive the price of home-grown Astragalus membranaceus, and the low price of home-grown Astragalus membranaceus will also suppress the soaring price of wild Astragalus membranaceus. It is worth noting that the wild astragalus is also the smallest of 3-5 years, and the larger one is also 7-8 years old. For home products for up to three years, some strips even have only one year, which means that their internal ingredients are the same, but the content is very different due to the length of growth, which is an important reason for the wide spread. This product is prone to mildew and discoloration. The product is affected by moisture or water stains, and two kinds of new aglycone are produced by Astragalus membranaceus and Astragalus mongolicum. One of them is unstable, and it is easily oxidized and turns green. The surface or gap is common with mildew, which affects medicinal use and reduces quality. During storage, keep the environment dry and tidy; in the hot and humid season, pay special attention and strengthen warehouse management. Specification quality: The wild product is divided into half hitting leather goods and hitting the net goods. The family products are divided into annual bars, middle age bars, and large bars. Origin Representatives: Home species of Astragalus are mainly distributed in the four major production areas of Shandong, Shaanxi, Shanxi, and Gansu, among which are concentrated in Nanfan Town, Lu County, Shanxi Province, Yaofeng Town, Xia County, Yunan City, Wan'an Town, Xinrong County, and Wanrong County. ; Shangluo, Shaanxi, Qiaonan Town of Linyi District of South Anhui, Xiaoyi Town of Shangzhou District of Shangzhou City, Jingcun Town of Luonan County, Huaihua Town of Danfeng County, Yecun Town of Shangluo City, and Shang Town of Feng County, etc.; Yimeng Mountain Area of ​​Shandong Province , Kushan County, Kushan Township, Laiwu City, tea mouth town, Fuguanzhuang Township and other places; Gansu Province, the main production of Longxi, Wuyuan, Ji County, Minxian County, Minchang, Hexi and other places. Wild Astragalus: mainly distributed in Hebei Province, northern Shanxi Province, the central and eastern Inner Mongolia and most of the three northeastern provinces, Hebei Chengde, Chifeng, Inner Mongolia, and some of the most major production areas, is one of the main varieties of wild Chinese herbal medicines in northern China. Keywords: price, production scale, reduction of wild resources. Non invasive ventilator is Bi-le vel PAP (Bi-level Positive Airway Pressure) device intended to provide non invasive ventilation for patients with R espiratory Insufficiencny. It is intended for adult patients by prescription in the home on hospita V/institutional environment. With its Target Tidal Volume function and other excelle nt comfort features and ffective perfurmance, it offers each patient pe rsonalized ventilation support. 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