folk religion. However, the Indonesian government does not recognize Kaharingan as a religion and therefore classifies those who adhere to Kaharingan beliefs as Hindus. Several places of worship are located in Pontianak, such as the Jami Mosque of Pontianak, which is considered the great mosque of Pontianak. Located in the complex of the palace of the former Pontianak Sultanate, this mosque is the oldest mosque and is one of the two buildings that witnessed the establishment of the city of Pontianak. At first, this mosque was also used as a center of government for the Sultanate of Pontianak. The name of this mosque was given by Syarif Usman Alkadri who is the son of Sultan Sharif Abdurrahman, who continued the construction of the mosque until it was completed. Other places of worship are the Cathedral of Saint Joseph, Pura Giripati Mulawarman, Vihara Budhisatva Karaniya Metta, and the Pontianak Congregation of West Kalimantan Christian Church. Some of these have existed since the Dutch colonial era, while some are constructed by the Indonesian government. Economy The gross regional domestic product of Pontianak City, according to the ADHK 2010 business field in 2015, reached 20.80 trillion rupiah. When compared to 2014, the production volume of goods and services produced in Pontianak City in 2015 increased by 0.96 trillion rupiah, or by 4.84 percent. Most of Pontianak city's economy relies on industry, agriculture, and trade. The trade, hotel, and restaurant sectors have been the largest economic base in Pontianak City in recent years. This can be seen from the percentage distribution of GDP, where the large and retail trade sector has the greatest role in total GDP compared to other sectors, which is 18.30 percent. In terms of usage, the value of GDP shows how products of goods and services are used for consumption, investment, or trading purposes with foreign/regional parties. Based on the percentage of GDP, aggregate demand in Pontianak City in 2015 as a whole experienced a growth of 4.84 percent compared to the previous year, whereas the household consumer component contributed as much as 10.61 trillion rupiah or by 51 percent. Industry The number of large and medium industrial enterprises in the city of Pontianak as of 2005 was 34 companies. Labor absorbed by industrial enterprises amounted to 3,300 people, consisting of 2,700 production workers and other workers and 600 administrators. Moderate or major industrial companies located in the District of