China is a big country in agricultural production, according to statistics from related departments, the annual crop straw residue of 60-70 million tons, the utilization rate is only 20%, the rest as a garbage disposal, tree branches, sawdust, rice husk and other also away tons...

　　The project is part of Protect environment, but also can save energy waste. From the beginning of the seventies of the last century, the last, all the countries in the world gradually established various institutions, and to develop a response to the regulations, in order to solve...