When customer is not familiar with a new request, supplier needs to offer professional proposal. In a certain field, supplier even needs to offer customized R&D job to solve the pre-sale and post-sale problems in case of surprise happen when customer starts in running. ETCN has strong technical knowledge to create and pass values. ETCN R&D service are widely offered in petroleum, smelting, food, electricity, paper, water conservancy, nuclear power, chemical, chemical fiber, printing and dyeing, aerospace, shipping, transportation, wine making, water treatment and other industries. Customized R&D service is the added value of ETCN for each customer.