In October 1988, the relevant government departments issued a document on the control of exports of acetic oxide, ether and chloroform, which can be used for synthesis of heroin and other narcotic drugs.

• 中国有关部门于1988年10月发文，对醋酸酐、乙醚、三氯甲烷三类可供制造海洛因等毒品的化学品实行出口管制。