Chinese officials said the explosion was due to improper injections of desulfurizer , part of the oil-refining process .
中国官方称爆炸的原因是注入含有强氧化剂的原油脱硫剂，属原油提炼加工过程。
A government investigation found the desulfurizer had been strongly oxidizing and that workers had failed to follow standard safety protocols , the new york times reported . As they give off oxygen , oxidizing agents can lead other substances , such as oil , to combust .
