Hundreds of trucks line up on the dusty entrance to Roto Moulders every day waiting for their turn to pick up already paid for plastic tanks for delivery, as part of a much longer 15, 000 kilometre-journey of profits to Dubai, Mauritius and back. It is a very busy factory, just off Nairobi's Enterprise Road, that manufactures more than 500 tanks a day of varying capacities of anywhere up to 24,000 litres which sells at Sh300,000 apiece.