1978 – 2004, Netaş (Nortel Telekom)
     As a member of the Forwarders’ Cooperative Ümraniye, Celal Karaca was engaged in forwarding operations of Netaş telephone switchboards which he delivered Turkey-wide to Türk Telekom, the state telephone operator, and post offices.

 1996 – 2002, Telsim
     Within the framework of a protect, forwarding services for Telsim and Telsim subcontractors such as Hobitel, Setkom, Mobises, Mobinet, İleti, etc.
     As part of those services base stations and components were being taken over at Telsim warehouses for delivery to various locations all over Turkey. Taking warehouse deliveries included takeover, loading, transportation, unloading and handover.

 Since 1996 – Alcatel-Teletaş
     Within the framework of a protect ADSL systems and Telekom switchboars are being taken over at Alcatel-Teletaş warehouse for Turkey-wide delivery. The Project-based operations are being continued.

 Since 2005 – Telsim
     Within the framework of a Project base stations and components are being taken over at Telsim warehouses for Turkey-wide delivery.

 Since 2004 – Anel A.Ş.
     Within the framework of a protect radio link equipment are being taken ver at Türk Telekom, Teletaş and Turkcell warehouses for Turkey-wide delivery for employment in base stations.