Chronic respiratory diseases are a series of diseases represented by chronic obstructive pulmonary disease (hereinafter referred to as COPD) and asthma. It is one of the four major chronic diseases that seriously affect the health of Chinese residents.
Natural gas is a new and clean energy and gas demand is highly robust since the beginning of the Covid-19 outbreak, shielded to some extent by extended heating season and domestic price cuts that helps the gas remains competitive against traditional energy source. Natural gas consumption is rising year by year. Accordingly gas meter industry is enjoying the prosperity for development.