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Citrus fruits account for about 15% of the world's total fruit production.

1. Pesticide in fruit juice. Juice has been accepted by more and more families for its unique taste and nutrition.

1. Gallium in Bayer mother liquor Gallium is a rare metal that plays an important role in the semiconductor industry. The demand for metal gallium has increased year by year. However, the source of metal gallium is scarce, and its products are mainly from by-products of the aluminum industry. Bauxite usually contains 0.002-0.008% of metal gallium. In the process of producing alumina by Bayer process, about 70% of the metal gallium in bauxite is leached with alumina, and about 30% remains in red mud. With the circulation of the Bayer mother liquor, the concentration of metal gallium in the Bayer mother liquor can be accumulated to 100-300 ppm.

In 2019, the total lithium production capacity of Qinghai Salt Lake is expected to reach 110,000 tons. According to the "Qinghai 100 billion lithium battery industry development plan", by 2020, Qinghai plans to produce more than 78 billion yuan of lithium battery industry, and by 2025 it will reach more than 180 billion yuan.

1. Anthocyanin A glycoside derivative is a water-soluble natural pigment widely found in plants in nature, and is a colored aglycon which is obtained by hydrolysis of anthocyanins. Under normal natural conditions, free anthocyanins are rare, often with one or more glucose, rhamnose, galactose, xylose, arabinose, etc. through the glycosidic bond to form anthocyanins, glycosidic and hydroxyl groups in anthocyanidins An acid-based anthocyanidin may be formed by ester bonding with one or several molecules of an aromatic acid such as coumaric acid, ferulic acid, caffeic acid or p-hydroxybenzoic acid.

1. Ginkgo flavonoid. At present, there are more than 170 kinds of medicinal ingredients of Ginkgo biloba.

Paracetamol, the product name is Baifuning, Bilitong, Tylenol, acetaminophen and so on.

1. Phenol wastewater. Phenol has been listed as a priority pollutant in water by Chinese environmental organizations.