Aligarh, Dec 02 (ANI): Aligarh, located in India's northern state of Uttar Pradesh is one of the important commercial centers of the country and houses many big and small business establishments. The city besides being known for locks has also carved out a niche for itself in the production of Gajak, a dry sweet made up of jaggery and sesame seeds. Harmony between Hindu and Muslim workers here is considered to be the main reason behind the industry's success.