The number of days with good air quality in Guangdong hit the best level on record: Guangdong Governor
"We deepened the battle against pollution prevention and control. Guangdong received the excellence in national assessment for four years in a row. The average concentration of PM2.5 dropped to 20.6 mg/m3. The ratio of days with good air quality reached 95.8%, the best level on record," said Guangdong Governor Wang Weizhong when delivering the Government Work Report on January 15.