For many years, GTT has developed an active policy to provide technical assistance all over the world for the maintenance and repair of membrane containment systems through specific agreements for repair shipyards and repair works subcontractors. The GTT approved partners are:

Country Approved Repair Yards Approved repair works subcontractors
China (P.R.)

▪ Yiu Lian Dockyards (Shekou)
▪ Huarun Dadong Dockyard Co.,Ltd. (HRDD)                     
▪ Guangzhou Wenchong Dockyard Co., Ltd. (GWD)
▪ Cosco Shipping Heavy Industry (Zhoushan) Co., Ltd.                         
▪ COSCO Shipping Heavy Industry (Shanghai) Co., Ltd.
▪ Zhoushan Xinya Shipyard
▪ CSSC Qingdao Beihai Shipbuilding Co., Ltd.(QBS)
▪ IMC Shipyard (Zhoushan) Co., Ltd.

  
Denmark ▪ Fayard A/S  
France

▪ Damen Brest
▪ Chantier Naval de Marseille

 ▪ Marchani
Indonesia ▪ PaxOcean  
Italy ▪ San Giorgio del Porto  
Korea  

▪ DSEC Co., Ltd.
▪ CRS Co., Ltd.
▪ DnT Service Co., Ltd.
▪ Hankuk LNG Co., Ltd.
Malaysia ▪ Malaysia Marine and Heavy Engineering  
Oman ▪ Asyad Drydock Company (oman)  
Philippines ▪ Seatrium Subic                                   
Portugal ▪ Lisnave  
Qatar ▪ Qatar Shipyard Technology Solutions  
Singapore

▪ Seatrium Admiralty
▪ Seatrium Benoi      
▪ Seatrium Tuas
▪ Seatrium Tuas Boulevard    

  
Spain ▪ Navantia Ferrol
▪ Navantia Cadiz		 ▪ Gabadi
Turkey  ▪ Besiktas Shipyard                            ▪ Kuzey Star Shipyard                        ▪ Gemak Shipyard  
United Arab Emirates ▪ Dubaï DryDocks World  
Japan ▪ Sasebo Heavy Industries Co., Ltd.  
Malta

▪ Palumbo shipyard

  
Barhain ▪ Arab Shipbuilding & Repair Yard Co (ASRY)  
The Netherlands ▪ Damen Verolme Rotterdam  
The Bahamas ▪ Grand Bahama Shipyard