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Izmit - Golcuk Karayolu 12.Km.
Yenikoy 41275 / KOCAELI
TURKEY
P.K. 204, 41002 KOCAELI
Tel : + 90. 262. 433 24 40 (6 lines)
Fax : + 90. 262. 433 24 46 (2 lines)
e-mail : gemsan@gemsan.com.tr