"I would like to thank all of Costell for work we have done together over the last three years. I was fortunate to have met competent and motivated people who have contributed to the stupendous result that is the Midac plant. You are a great team. I hope you get more success, you deserve it."

"The plant built by Costell ensures a pay-back of a little over two years. In the first two months' operation, we had an energy cost saving well over 20%."