The high cost of purchasing high technology is the reasons why economical alternatives should be assessed, such as the use of second hand technology. There is evidence to show that in some countries the use of second hand equipment has become commonplace in recent years, so, Doris is able to service and overhaul second-hand plants based on the following items:

• Interior/total reclamation/demolition of process structure
• Selective dismantling/ controlled reclamation/demolition
• Upgrading equipment
• Relocation of complete manufacturing plants
• Project management
• Engineering