Taking residence of a total of 100, 000 sq. Ft. In Hong Kong's Yuen Long Industrial Estate, Dunwell Enviro-Tech (Holdings) Limited is the pioneer in different environmental and health technologies in the region. With more than ten years experience in filtration technology, its subsidary, Dunwell Life sciences (Holdings) Limited, has successfully provided advanced solutions for production of high quality botanical extracts. Also, with continuous sharing and collaboration with academic institutes, industrials and public, Dunwell Life Sciences (Holdings) Limited is active in research and developing botanical extracts purification process. Through continuous commitment towards total quality and environment protection, Dunwell has been accredited for ISO 9001 and ISO 14001 certificates in August, 2003 and August 1999, respectively.