Photo taken on Sept. 2, 2015 shows the accident site after a blast at Shandong Binyuan Chemical Co., Ltd. in Diaokou Township of Lijin County, east China's Shandong Province. At least five people were confirmed dead after the explosion occurred on midnight Monday. (Xinhua/Lou Chen)

Photo taken on Sept. 2, 2015 shows the accident site after a blast at Shandong Binyuan Chemical Co., Ltd. in Diaokou Township of Lijin County, east China's Shandong Province. At least five people were confirmed dead after the explosion occurred on midnight Monday. (Xinhua/Lou Chen)

Photo taken on Sept. 2, 2015 shows the accident site after a blast at Shandong Binyuan Chemical Co., Ltd. in Diaokou Township of Lijin County, east China's Shandong Province. At least five people were confirmed dead after the explosion occurred on midnight Monday. (Xinhua/Lou Chen)

Photo taken on Sept. 2, 2015 shows the accident site after a blast at Shandong Binyuan Chemical Co., Ltd. in Diaokou Township of Lijin County, east China's Shandong Province. At least five people were confirmed dead after the explosion occurred on midnight Monday. (Xinhua/Lou Chen)