To, M/s Everest Transmission B-44, Mayapuri Industrial Area, Phase-1 New Delhi 110064 Kind Attn: Mr. Pradeep Kumar Dear Sir, We have purchased Roots pump Model no. EVB50 (Capacity: 4000 M 3/h) and EVB05( capacity: 400 M3/h )in 2000 and 2001 respectively. The performance of the pump is excellent even in harsh medium as effluent being pumped by this system contains corrosive gases like Chlorine and Iodine. We are using this pump till date without any problem. We are highly satisfied with your services which you provided time to time. We hereby appreciate the pump as well as services of your firm including behavior of your service engineer. With warm Regards, J.K.Mittal, Head, Chemical and Excimer Laser Section, and Laser System Engineering Division Raja Ramanna Centre for Advanced Technology, Indore ( M.P.) 452013