Original sentence: Since then, it has grown into a chain across southern Ontario.The Mandarin headquarters, based in Brampton, includes a corporate restaurant, a banquet facility, a warehouse, and the corporate head office.The buffet concept, as it is known since the 1990s, was introduced in 1987 with the opening of their first franchise location.The restaurants offer à-la-carte, take-out and delivery items such as chow mein, noodles, stir fries, and prime rib, as well as a  salad bar, grill counter, sushi table and ice cream bar desserts.There are currently 21 locations in Ontario, Canada
Edited sentence: The Mandarin headquarters, in Brampton, includes a corporate restaurant, a banquet facility, a warehouse, and the corporate head office.The buffet concept was introduced in 1987 with the opening of their first franchise location.The restaurants offer à-la-carte, take-out and delivery items such as chow mein, noodle dishes, stir fry, and prime rib, as well as a salad bar, grill counter, sushi table and ice cream bar desserts.There are currently 21 locations in Ontario