On September 30, 2020, the Defence Institute started  its participation in the XIV International Defence Equipment and Services Exhibition "Hemus 2020 - Defence, Antiterterrorism, Security". Traditionally, it holds in the International Fair Plovdiv under the Ministry of Defense and the Ministry of Economy patronage.

The Tenth International conference "Research and Investment in technological innovation – a crucial factor for defence and security" was held on the 1 of October, 2020 within the XIV International Defense Equipment and Services Exhibition "Hemus 2020 – Defense, Antiterterrorism and Security". The “Professor Tsvetan Lazarov” Defense Institute and “Hemus-95” Foundation were co-organizers of the event.

On October 2, 2020, within the XIV International Exhibition for Defense Equipment and Services "Hemus 2020 - Defense, Antiterrorism and Security", demonstration shootings were held at the Central Artillery Technical Test Range "Zmeyovo" (CATTR).

The participation of the "Professor Tsvetan Lazarov" Defence Institute in the XIV International Exhibition of Defence Equipment and Services "Hemus 2020 – Defence, Antiterterrorism and Security" passed with a particularly increased interest by state departments and institutions, representatives of the political and military leadership of the Bulgarian Army, military diplomatic corps, military education system, the Bulgarian Academy of Sciences, representatives of Bulgarian and foreign companies and enterprises of the Defence industry.

On October 15, 2020 the "Prof. Tsvetan Lazarov" Defence Institute was visited by students from the University of National and World Economy, whose are studying in the Specialty "Economics of Defense and Security" in the educational and qualification degree "Bachelor".