Firefighters look at fire safety apparatus and equipment at a fair in Dhaka, Bangladesh, Feb. 13, 2020. A three-day fair titled "International Fire Safety and Security Expo 2020" kicked off on Thursday in Dhaka. (Str/Xinhua)

Firefighters look at fire safety apparatus and equipment at a fair in Dhaka, Bangladesh, Feb. 13, 2020. A three-day fair titled "International Fire Safety and Security Expo 2020" kicked off on Thursday in Dhaka. (Str/Xinhua)

Visitors view fire safety apparatus and equipment at a fair in Dhaka, Bangladesh, Feb. 13, 2020. A three-day fair titled "International Fire Safety and Security Expo 2020" kicked off on Thursday in Dhaka. (Str/Xinhua)