Post partition, after being settled in Karachi, Late Haji Sultan Ali started a business with the name of M/S Haji Allah Rakha Sultan Ali (HARSA) that dealt in the import of yarn, PMC, chemicals and secondhand clothing along with shares trading in the stock market. Back then, in the first phase, the import/trading office was established in North Napier Road for secondhand clothing along with an office in stock exchange for trading of shares in the second phase. As the imports and trading of yarn and cotton increased, the trading office was moved to Kapra Market. With the increase in business of PMC and chemicals, the head office was then shifted to Jodia Bazar in 1975.

After renting out many warehouses for the substantially growing imports and trading, the current warehouse was purchased in 1970 as it was deemed necessary to get one for the business needs. To efficiently manage the space available at the warehouse, it was decided to provide warehousing services to the public as well. Additionally, a custom bonded license was acquired in 1977 (one of the first license holders by Pakistan Customs and currently the oldest), and this marked the beginning of Haji Allah Rakha Sultan Ali Custom Bonded warehouse.

Currently managed by the third generation and under the supervision of Sharafat Ali S/o Late Haji Sultan Ali, HARSA Group has been in business for more than 65 years. It is currently one of the leading warehousing solution providers of the country and enjoys an established name in the import and trading of PMC and chemicals.