Beijing will shut down 2,500 small polluting firms this year in a latest effort to protect the environment.
Structural adjustment in recent years has led to a dramatic fall of heavily polluting and highly energy-consuming companies in the Chinese capital.
But small polluting sources such as restaurants, hotels, garages, and bathhouses are increasing.
Hit by bouts of heavy smog this winter, the Beijing government aims to eliminate coal use in six downtown districts in two years and help 600,000 households shift from coal to clean energy in five years.
The capital also plans to reduce coal consumption by 500,000 tonnes in 2016 and close all coal-fired boilers throughout the city by 2020.