This study is to aim at the conditions of retailing channels, format of operation, characteristic of the industries, and the willingness of the aluminum windows and doors manufacturers, together with problems encountered, such as conditions of the selling agents and conflicts of the outlet channels. Further discussion of the interests of agents and the conflict of outlet channels of aluminum window and door manufacturers leads to the understanding of the growing application of Internet, amount the aluminum window and door manufacturing industries. From research of literature and visiting the retailers of aluminum window and door, materials have been summarized as ” Cases Analysis “ and “ Discoveries of the Study “. Four (4) topics had been suggested for explaining how the aluminum window and door manufacturers, within the competitive market situation, be able to establish partnership relation with the retailers. In addition, within the industry, how to be effectively provided (sufficient interests) to the agents, and avoid conflicts of outlet channels, as well as the strategy of diligently use of the tool of Internet to maintain the partnership relations were examined.