Zhejiang Wolwo Bio-Pharmaceutical Co., Ltd.

Zhejiang Wolwo Bio-Pharmaceutical researches, develops, produces, and sells diagnostic and therapeutic products for allergic diseases in China and globally. The company offers Changdi, a skin prick test product and dust mite drops.

Its portfolio also includes Changhao, an Artemisia annua pollen allergen sublingual drop, and Changdian, a dust mite skin prick test diagnostic kit. It is also involved in the R&D of cells and natural medicines. Founded in 2002, the company is headquartered in Huzhou, China.