BEIJING—A flammable gas leak at a plant owned by ChemChina subsidiary Hebei Shenghua Chemical Industry Co caused a blast that killed 23 people and injured 22 this week in Zhangjiakou, Hebei Province, ChemChina said in a statement on Nov. 30.
PVC producer Hebei Shenghua had leaked vinyl chloride during production, and it caught fire and caused a chain explosion that burned trucks and buildings, parent company ChemChina said.