I. Supplier link structure ( self-produce, agent, long-cooperation, strict test, select from suppliers, backup rules) can assure purchase cost and quality to get more advantage of competitive.
II. Customer first investment and running cost analysis, professional, personalized design idea, new technician adoption can offer customer optimized setting.
III. Outstanding professional service can increase customer’s additional value. (offer free consultant service, guard customer’s investment and technical parts, offer free trainning, offer permanent technical support once cooperation.