The monopolization of camphor inland went into effect in October, 1903, and before this, in Taiwan, the Taiwan Camphor and Camphor Oil Monopoly Regulations was regulated in June, 1899, and went into effect in August.
内地の樟脳専売は明治36年10月施行、これより前に台湾では明治32年6月台湾樟脳及樟脳油専売規則が制定され、8月実施された。