Dongin Engineering was established in 1991, and started business in construction and plant facilities. We carried out mechanical facilities work as a co-operative company of nuclear & thermal power plant for many years. we are working hard for customer satisfaction and quality management to be trusted company. Moreover, our research team concentrates on developing enhanced insulation device to save energy and conserving environment. We aim to steadily put our effort to give satisfaction to our customers and guarantee the best quality insulation products through inventing new technology and making use of our professional know-how.