维生素类药，参与体内代谢过程，用于防治 糙皮病等烟酸缺乏症。可用于制药、食品添 加剂、饲料添加剂、化妆品等行业。
Vitamin drugs, involved in the body metabolic process, used to prevent pellagra and other nicotinic acid deficiency. It can be used in pharmaceutical, food additive, feed additive, cosmetics and other industries.
