The Act on Registration and Evaluation, etc. of Chemical Substances was promulgated by the Ministry of Environment of Korea (MoE) and came into force on 1 Jan 2015. After its implementation, all the new substances and existing substance with annual volume more than 1 ton shall be registered before they are allowed to be introduced into Korea market. The amendments came into effect on 1 Jan 2019, which sets out a plan of registering existing substances over 1 ton per year in the next 12 years. Pre-registration of existing chemical substances (≥1 t/a) before 30 Jun 2019 is necessary to be eligible for the corresponding grace period.