The trade remedy system is a general term for a system to impose an extra duty in addition to customs duty, specifying the product, supplier and supplying country, etc., in case of special circumstances such as unfair trade practices and a sudden surge of import of foreign goods.
Trade remedy measures include a retaliatory duty, a countervailing duty, an anti-dumping duty and a safeguard duty.
Trade Remedy System(Link to Japan Customs website)