Guanxi Pumelo is a kind of well known traditional fruit in Pinghe County, Fujian Province. In 2007, the growing area of Guanxi Pumelo in the whole county accounted for 1/3 of the one in the whole country, with annual yield being up to 630000 tons. For now, the industry of Guanxi Pumelo has become the backbone for the economical development of Pinghe County. More and more pumelo peel waste has turned out to be a problem of waste of natural resourse and environmental pollution while more and more pumel...