Recently Beijing made a new stipulation on the enforcement of "Atmosphere Law." It says that houses of the residential buildings will not be used for the business of catering service that produces oil and soot pollution. The existing catering service business must be ordered to treat within the limit time or shut down. The municipal government divided the range for limiting and gradually banning the coal burning. Within the divided range, no coal-burning equipment is allowed to build, rebuild and renovate. The existing coal-burning equipment must change to utilize clear energy resources, including natural gas or electricity within the limit period...