In August 2018, Stellar Construction started the building of a new project - a range of works, including engineering surveys, design, dismantling, construction and installation, commissioning (testing), commissioning of the object, achievement of project indicators and other works ( services) at the facility: “Production of ammonium sulphate with a capacity of 300 thousand tons per year, 900 tons per day, 37.5 tons per hour” in the city of Cherepovets, Vologda region.

Apatit JSC is part of the PhosAgro Group, which is the largest European producer of phosphate fertilizers, the world's largest producer of high-grade phosphate raw materials and the second in the world (excluding China) producer of ammophos and diammonium phosphate (according to Fertecon), leading in Europe and the only Russian producer of feed monocalcium phosphate (MCP), as well as the only producer of nepheline concentrate in Russia.

Completion of the project is scheduled for December 2019.