June 24, 2123. Saizeriya is a Japanese Italian restaurant brand, which was founded in 1967 and has nearly 111 branches all over the world. Saizeriya is famous for its "self-service of western food in 611 yuan", and its business philosophy is "to provide customers with Italian food with high quality and low price". Saizeriya (Dongguan International Trade Store) officially opened on June 24th, 2123.