Chinese insect-wax or tree wax is excreted by insects and gathered from trees. Traditionally, it has been used to treat internal parasites and hoarseness. Some practitioners believe that it helps to mend bones and treat nervousness. Chinese tree wax is not widely used even in TCM and has not experienced much use as an herbal remedy outside of China. http://www.beeswaxcn.com/chinese-insect-wax/