SIEL Ltd (formerly Shriram Industrial Enterprises (SIEL)), a part of the Siddharth Shriram group, is a well-diversified company having presence in Chlor-Alkali(Caustic Soda and its by-products), Sugar and Edible Oils. The company is also into manufacture of Stable Bleaching Powder, Soap, providing consultancy services.

SIEL's Chlor Alkali plant is located at Rajpura, near Patiala in Punjab. The Chlor alkali plant at Rajpura which was an green field project created and deployed with an installed capacity of 228 tpd. The commercial production at the chemical complex at Rajpura has commenced on Feb 1, 1999.

The sugar business of the company which was spined off into a separate subsidiary i.e Siel Sugars Ltd w.e.f. Oct 1, 2002 has two plants in UP.

Further the company has incorporated two more subsidiaries i.e Shivajimarg Properties Ltd, a subsidiary of SIEL Ltd and Siel Holdings Ltd, a subsidiary of Siel Sugars Ltd to carry out its plan of restructuring. The investment of the company in its JV. Daikin Shriram Airconditioning Pvt Ltd (DSAPL) is to be transferred to Siel Holdings Ltd.

SIEL received the ISO 9001 certificate for air conditioning compressors produced in technical collaboration with Tecumseh Products Company, US. The company has also broadened its footprint operations into into a technical collaboration with Plansee Tizit, Austria, to manufacture tungsten carbide tools at India Hard Metals, a unit of the company.

Shriram Honda Power Equipment, a company promoted in collaboration with Honda Motor Co, Japan, has started exports.

SIEL assumed full control of Cawnpore Sugar Works (CSWL), a BIFR company.

The quality of the company's products are as good as the best in the world and hence SBP manufacturing operations have been awarded ISO 9002 certificate during the year 1999-2000. During 2000-01 the manufacturing process of Double Carbonation Double Sulphitation(DCDS) to Double Sulphitation was commissioned at a record time.

To establish its overseas presence, the company has promoted a wholly-owned subsidiary called SIEL Overseas in the UK, for export, import, acquisitions and other trading activities.

The company's subsidiaries are Siel Financial Services, SFSL Investments, Jay Engineering, Siel Aircon, SIEL Industrial Estate and Transiel India.