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
▪ Qingdao Beihai Shipbuilding Heavy Industry Co., Ltd. (BSIC)

  
Denmark ▪ Fayard A/S  
France ▪ Damen Brest ▪ Marchani
Indonesia ▪ PaxOcean  
Italy ▪ San Giorgio del Porto  
Korea  

▪ DSEC T&S
▪ CRS Co., Ltd
▪ DnT Service Co., Ltd
Malaysia ▪ Malaysia Marine and Heavy Engineering  
Oman ▪ Oman Drydock Company  
Philippines ▪ Seatrium Subic                                   
Portugal ▪ Lisnave  
Qatar ▪ Nakilat Keppel Offshore Marine (NKOM)  
Singapore

▪ Seatrium Admiralty      

▪ Seatrium Benoi      
▪ Seatrium Tuas
▪ Seatrium Tuas Boulevard    

  
Spain ▪ Navantia Ferrol
▪ Navantia Cadiz		 ▪ Gabadi
Turkey  ▪ Besiktas Shipyard                            ▪ Kuzey Star Shipyard   
United Arab Emirates ▪ Dubaï DryDocks World