An explosion at a chemical factory in Weifang, a city in eastern China, has killed at least five people and injured nineteen; six people are still missing. The explosion happened at a factory owned by Gaomi Youdao Chemical Co., which makes pesticides and medical chemicals. It broke windows in nearby buildings and sent a lot of smoke into the air. Students at a nearby school said they smelled something strange after the explosion. More than 230 workers were sent to the area, and a team is checking for possible pollution. This event happened after a national meeting that aimed to make the chemical industry safer, which shows that there are still safety problems in China. Last year, the Gaomi Youdao factory was praised for managing risks well, because they had found and fixed over 800 safety dangers.