HDO continues to have a technical collaboration with Dorr-Oliver Emico, Germany GmbH , for making technology available. HDO core business areas are Designing, Manufacturing, Supplying & Installing Equipment, Systems & Processes for liquid-solid separation and pollution control in the following Industries: Pulp and Paper, Mineral Beneficiation, Chemicals, Food and Pharmaceuticals, Breweries and Distilleries, Refineries and Petrochemicals, Oil and Gas Phosphatic Fertilizer, Industrial and Municipal Waste Water / Waste Water.

The company also provides plants using reverse osmosis technology for treating seawater and brackish water and projects for complete phosphatic fertilizer plants, heavy chemicals, metallurgical plants and water and wastewater treatment plants on a turnkey basis.

Hindustan Dorr-Oliver Ltd. is a growing company with substantial investment in Research and Development, equipment manufacture and, most of all, in people who embody the technologies and decades of experience to serve its vast clientele in diverse industries.

The company has established its own manufacturing facility at Ahmedabad, in the State of Gujarat, under the name and style of "Hindustan Dorr-Oliver Works". This facility is specially equipped to manufacture all rotary equipment such as filters, rotary driers, coolers, granulators, scrubbers, etc.