
Zhejiang Wolwo Bio-Pharmaceutical Co., Ltd. engages in the research, development, production, and sale of diagnostic and therapeutic products for allergic diseases in China and internationally. The company offers Changdi, a skin prick test product and dust mite drops; Changhao, an Artemisia annua pollen allergen sublingual drop; and Changdian, a dust mite skin prick test diagnostic kit. It is also involved in the research and development of cells and natural medicines.