Nahan Foundry Ltd. was set up for the first time in 1875 A.D. has now been taken over by the Himachal Pradesh Government in 1964.
Kinnauri Arkel and Lincon Boon are varieties of peas.
Solan Gola is a variety of tomato in the district.
There are five seed Multiplication Farms at Bhagani and Daula Kuan in Paonta Sahib
The state government has started a food processing unit at “Dhaula Kuan”.
The HPMC is having fruit processing units at “Rajgarh” and “Bagthan”.
The Mulee, Masheer, Gid, and Mirror cap are varieties of fish found in district.
The cement corporation of India has set up cement factory art ‘Rajban‘.
The first bank in Sirmaur called Nahan National Bank was established in 1893, which later on was renamed as Bank of Sirmaur in 1944. The bank of Sirmaur was merged with Himachal Pradesh State Co-operative Bank Ltd. in 1955
The resin and turpentine factory in Nahan is another oldest factory, which gets its raw material from the extraction of chil trees, which are in abundance in the district. This factory was opened in 1945 and come into operation from 1949 onwards.
The important minerals found are limestone, gypsum, and barytes.
One central poultry farm at Nahan and one poultry extension centre at Paonta Sahib is functioning in the district in addition to six poultry farms located at or around Nahan, Paonta Sahib, Kolar, Moginand, Sarahan, and Rajgarh area.
Before the opening of the hatchery at Nahan, the farmers were solely dependent on hatcheries of the adjoining states of Punjab, Haryana and Union Territory of Chandigarh.
Training in poultry farming is also imparted at Nahan and Paonta Sahib.