The PRTR law :

Containing more than 1% of Class I Chemical Substances or Class II Chemical Substances (more than 0.1% for carcinogens)

Industrial Safety and Health Law (ISHL) :

Containing more than 1% of substances given special permission for manufacturing or notifiable substances set by the government

Poisonous and Deleterious Substances Control Law :

Poisonous substances, deleterious substances and specific poisonous substances designated by the law