SHANGHAI - An explosion at a pesticide plant in eastern China has killed 47 people and injured more than 600, state media said Friday, the latest casualties in a series of industrial accidents that has angered the public.

The blast occurred Thursday at the Chenjiagang Industrial Park in the city of Yancheng, in Jiangsu province, and the fire was finally brought under control at 3 a.m. Friday (1900 GMT), state television said.

Survivors were taken to 16 hospitals with 640 people being treated for injuries. Thirty-two of them were critically injured, it said.

The fire at a plant owned by the Tianjiayi Chemical Company spread to neighboring factories. Children at a kindergarten in the vicinity were also injured in the blast, media reported.

Paramilitary police officers transfer an injured m Paramilitary police officers transfer an injured man after an explosion in Yancheng in China's eastern Jiangsu province, March 21, 2019. Paramilitary police officers transfer an injured man after an explosion in Yancheng in China's eastern Jiangsu province, March 21, 2019.

?Past safety violations

The cause of the explosion was under investigation, but the company, which produces more than 30 organic chemical compounds, some of which are highly flammable, has been cited and fined for work safety violations in the past, the China Daily said.

President Xi Jinping, who is in Italy on a state visit, ordered all-out efforts to care for the injured and to “earnestly maintain social stability,” state television said.

Authorities must step up action to prevent such incidents from happening and find out the cause of the blast as quickly as possible, Xi added.

“There have recently been a series of major accidents, and all places and relevant departments must fully learn the lessons from these,” the report cited Xi as saying.

An inside view of a room in the aftermath of an ex An inside view of a room in the aftermath of an explosion in Yancheng in China's eastern Jiangsu province early March 22, 2019. An inside view of a room in the aftermath of an explosion in Yancheng in China's eastern Jiangsu province early March 22, 2019.

?Inspections of other businesses

The Jiangsu environmental protection bureau said in a late Thursday statement the environmental monitoring station in the area had found no abnormal concentrations of toluene, xylene or benzene.

Concentrations of acetone and chloroform outside the perimeter of the explosion zone were also within normal limits, it added.

Jiangsu will launch inspections on chemical producers and warehouses, according to an emergency notice published by official media Friday. The notice, published on the news website of Jiangsu province’s Communist Party, said the government would shut down any chemical firms found not complying with regulations on dangerous chemicals.

Earlier disasters

Public anger over safety standards has grown in China over industrial accidents ranging from mining disasters to factory fires that have marred three decades of swift economic growth.

In 2015, 165 people were killed in a series of explosions at a chemical warehouse in the northern city of Tianjin.

The explosions at Tianjin, one of the world’s busiest ports and not far from the capital, Beijing, were big enough to be seen by satellites and register on earthquake sensors.

Despite repeated pledges by the government to tighten safety, chemical plants in particular have been plagued by disasters.

In November, a series of blasts during the delivery of a flammable gas at a chemical manufacturer killed 23 people.