Liu said that the photocatalyst on a subway train is effective for three months. The method will be used on more subway lines in the future.
Liu Yang of the city's bureau of natural resources, said rehabilitating the mine had proved a challenge.
Liu said the deep integration between AI and manufacturing, retail, finance and other sectors will help improve efficiency, boost productivity and foster innovative business models.
Listed under API, the firm priced its offering at per American depository receipt, which was also ahead of its to proposed price range.
Liu also said scientific solutions China has found to overcome challenges in building forest cities should also be studied by other countries to help improve ecology-related services around the world.
Liu Yanling, 59, is the oldest child. He went down the mountain at the age of 16 and spent 20 years earning a living, but returned at 47 because of cerebral thrombosis. He picked herbs on the mountain and cooked his own herbal soup to treat himself. A year later, the disease healed.
秦皇岛那个医院治白癜风
Liu Ying, 53, a college teacher in Beijing, said except for apparel, most of her shopping is done online. They include kitchen tools, books and fresh fruit. Most of the time, she is inspired by promotions from friends, Weibo bloggers and WeChat groups.
Liu Dongru, deputy director of the Hubei Health Commission, said the province lowered its emergency level for the pandemic from the second-to the third-highest on June 13.
Liu set up the UK Aberdeen Chinese Association in February, after noticing how other cities in the UK had been able to respond to situations through their established associations.
Liu Yi in Beijing, Lucie Morangi and Edith Mutethya in Nairobi contributed to this story.