Introduced by the second International Opium Convention, the Permanent Central Opium Board had to supervise the statistical reports on trade in opium, morphine, cocaine and heroin.
根据修订版的国际鸦片公约，常设中央鸦片委员会需要监督鸦片、吗啡、可卡因和海洛因的贸易统计报告。