Vitamin D2 is the chemical name of Ergocalciferol, a form of vitamin D. Ergocalciferol is a secosteroid formed by a photochemical bond breaking of a steroid, specifically, by the action of ultraviolet light on ergosterol.Viosterol, the name given to early preparations of irradiated ergosterol, is essentially synonymous with ergocalciferol .

Functions:
1) Vitamin D2 is used to prevent vitamin D deficiency and treatment, such as: vegan, parenteral nutrition patients with pancreatic insufficiency malabsorption syndromes, liver and gallbladder disease (liver damage, cirrhosis, obstructive jaundice), intestinal disease (fatty diarrhea, Crohn's disease, chronic diarrhea), stomach resection.
2) Vitamin D2 is used for the treatment of chronic hypocalcemia, hypophosphatemia, rickets associated with chronic renal insufficiency and osteomalacia, familial hypophosphatemia and hypoparathyroidism (surgery, idiopathic or pseudo-hypoparathyroidism)
3) Vitamin D2 is used to treat acute and chronic and post-operative tetany potential disease and idiopathic tetany disease.

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   Hong Kong Excellence Biological Technology Co., Ltd. is located in Guangdong Province, China.  As one of the most dynamic factories and foreign trade companies in the Chinese market, we have a registered capital of RMB 5 million.  It mainly produces and develops local anesthetics, pharmaceutical intermediates, organic solvents, and steroids and other APIs.  In addition, we have a self-developed production line pharmaceutical raw material production plant, and we also have a pharmaceutical raw material research and development test center.  We also cover the custom synthesis business of various organic compounds as a supplement.  We can synthesize almost all chemicals.
    Our customers are all over the world, mainly selling in the United States, Canada, Australia, the United Kingdom, the Netherlands, Germany, France and other EU countries, Southeast Asia, South America, and Oceania. We also have many customers.
   Our business is based on honesty and mutual trust.  Sincerely look forward to establishing long-term mutually beneficial business relationships with customers around the world.