1961
- Kütahya Azot factory was established.
1971
- İstanbul Gübre Sanayi A.Ş. (İGSAŞ) was established as a public institution in the Körfez district of Kocaeli.
2004
- İGSAŞ was purchased by Yıldızlar Yatırım Holding A.Ş. within the scope of privatization on 18.03.2004.
- Kütahya Azot Factory was purchased from privatization.
- Samsun warehouse became operational.
2007
- The 34.5% N (Nitrogen) Prilled Porous Ammonium Nitrate (PPAN) Production Unit was put into operation at the İGSAŞ Facility.
2008
- İGSAŞ Kütahya Dilute Nitric Acid Plant deNOx facility was established.
- İzmir Aliağa warehouse became operational.
2012
- Modernization and expansion works were carried out at İGSAŞ Port, and the ship capacity was increased to 8.
- Kütahya Fertilizer Plant chimney washing system was established.
2015
- Production and sales of İGSAŞ Blue started at İGSAŞ Kocaeli Facility.
- Capacity increase was made for the İGSAŞ Blue unit at İGSAŞ Samsun Facility.
2016
- Investment in a 50,000 ton/year capacity potassium nitrate and 115,500 ton/year capacity dilute nitric acid plant started.
- Antalya warehouse became operational.
2017
- Completed the investment in Antalya Special Fertilizer Plant.
- Tekirdağ warehouse became operational.
2018
- Obtained the AEO Certificate.
- Completed the investments in Potassium Nitrate and Ammonium Chloride Plants at İGSAŞ Kütahya Facility.
- Activated the R&D Center at İGSAŞ Kütahya Facility.
- 2nd Nitric Acid Plant Investment.
2019
- Completed the Steam Boiler Investment
2020
- Renewal of the Ammonia Combustion Reactors and Circulation Systems of the Nitric Acid Plant
- Complete Renewal of the Turbine-Compressor System
- Renewal of the Cooling Tower of the Nitric Acid Plant
- Renewal of the Fertilizer Cooler System
- Modernization Investment in the Turbo Compressor, Automation, and Anti-surge System
2021
- Obtained the TSE Covid-19 Safe Production Certificate at İGSAŞ Kütahya and Kocaeli Facilities.
- Updated systems to provide faster service to our customers with SAP S/4HANA.
- Increased the capacity of aqueous ammonia at İGSAŞ Kocaeli Facility.
- Invested in an Organomineral and compound production plant in Samsun.
- Invested in a Special Fertilizer production plant in Antalya.
2023
- Investment decision in Hatay was made.
2024
- Samsun investment was commissioned.
