Japan enforces stringent customs laws and strict quarantine regulations prohibiting the importation of various dangerous and illegal items to protect public safety and domestic agriculture. Prohibited goods include illegal narcotics, firearms, explosives, counterfeit brand-name goods, obscene materials, and unauthorized pornography. Furthermore, strict biosecurity laws ban bringing in most fresh fruits, vegetables, meat products, plants, and animal soils without official inspection certificates from quarantine officers to prevent the spread of foreign livestock diseases and agricultural pests.