• 1982 – Share in ÖZYURT KİMYA SANAYİ INC. was acquired and later, the name of the company was changed to DİPER KİMYA ENDÜSTRİSİ SANAYİ VE TİCARET INC. (In 1994, the share was assigned.)
• 1984 - PET-GÜN BOYA İMALAT SANAYİ LİMİTED ŞİRKETİ was founded. (The name of the company was changed to PET-KA MERMER SANAYİ VE TİCARET LTD in 1987 and to da PET GIDA SANAYİ VE TİCARET INC. in 1992.
• 1987 - PET-MA MADENCİLİK İMALAT LTD was founded and in the same year the construction of a barite factory was completed in Giresun. (In 1992, the company was rearranged as PET-MA MADENCİLİK İMALAT SANAYİ VE TİCARET INC.)
• 1988 - PETEKS DIŞ TİCARET ANONİM ŞİRKETİ was founded in order to conduct the production and export activities of the barite mine and grounded barite’s foreign trade operations. (Shares of Tempa Foreign Trade Co. was purchased.)
• 1989 - PETİS İŞLETMECİLİK SERVİS TURİZM INC. was founded in order to manage and operate all services of PETYA Holiday Site in Muğla, Datça.
• 1989 – As the first Turkish company to enter Siberia, PETKONTUR LTD began its activities in Siberia with the construction of 500 bed Novozkuznetsk General Surgery Hospital and continued with policlinic, public housing building, a bread factory and cafeteria.
• 1989 - SEK-Marketing Tourismus und Trade GmbH was founded for the marketing of the Villas constructed in Datça.

History...