Hdo, also known as Hindustan Dorr-Oliver Limited, is a leading brand in the industrial EPC market with a rich history of providing state-of-the-art technology solutions for over seven decades. Starting as a supplier of solid-liquid separation equipment, Hdo has evolved into a major player in the Engineering EPC industry, offering integrated turnkey solutions that are cost-effective. With a pan-India presence, Hdo has offices in all major cities including Mumbai, Bangalore, Chennai, Kolkata, Delhi, and Ahmedabad.

The brand's Engineering Services arm, HDO Technologies, provides a complete range of in-house engineering services, ensuring control over delivery time and quality. Hdo's manufacturing facility in Ahmedabad manufactures a wide range of products such as pressure vessels, heat exchangers, storage tanks, and proprietary solid-liquid separation equipment. Renowned as one of the top ten manufacturers of pressure vessels and Heat Exchangers in India, Hdo has been involved in major industrial projects across various sectors including mining and minerals, water and wastewater, fertilizers and chemicals, and pulp and paper.

Maintaining a focus on quality and excellent project execution skills, Hdo has built a strong reputation and gained repeat business from clients, sometimes on purely nomination basis. As a publicly listed company, Hdo has a diverse shareholder base, with 55% held by its parent company IVRCL Infrastructures and Projects Limited and 25% by Foreign Institutional Investors. With a talented workforce of over 1,300 people, the majority of whom are engineers or hold equivalent degrees, Hdo manages multiple active sites at different stages of completion, overseeing a labor force of over 14,000 across India.

The brand has obtained international certifications for Quality, Safety, and Environmental Management Systems, ensuring adherence to global standards. Hdo takes pride in being India's partner in developing modern industrial infrastructure and attributes its success to its highly qualified and passionate team of professionals