Complex sentence: Located in Kharkov, Sukhoi was not satisfied with the geographical location of the OKB, which was isolated from the scientific pole of Moscow, and he insisted that the OKB should relocate to the aerodrome of Podmoskovye.
Split into simpler sentences: Located in Kharkov, Sukhoi was not satisfied with the geographical location of the OKB. The OKB was isolated from the scientific pole of Moscow and insisted that the OKB would relocate to the aerodrome of Podmoskovye.