Seberang Perai has witnessed massive industrialisation as well, with industrial estates and oil refineries being established in the late 20th century in areas like Mak Mandin and Perai. The major local firms currently operating in Perai, including Malayan Sugar, Malayawata Steel, Southern Steel, Harvik Rubber and Soon Soon Oilmills, have been joined by multinational companies, such as Mattel, Pensonic, Hitachi, Mitsuoka, Chevron and Honeywell Aerospace. In recent years, Batu Kawan has also been rapidly industrialised, with a number of international firms, such as Boston Scientific and Bose Corporation, setting up manufacturing plants in the town.