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writing board. 3 Each transaction subject has the ability to communicate and deliver; 4 each transaction subject can freely choose or reject; 5 each transaction entity believes that the transaction with the other party is appropriate. Therefore, market analysis draws on the basic concepts and theories of roles and status, group and reference groups, family life cycle, social class and lifestyle, culture and subculture, relationship and relationship network from sociology. These concepts and theories used to depict and summarize the main target group of consumers that is 6 .

writing board. 3 Each transaction subject has the ability to communicate and deliver; 4 each transaction subject can freely choose or reject; 5 each transaction entity believes that the transaction with the other party is appropriate. Therefore, market analysis draws on the basic concepts and theories of roles and status, group and reference groups, family life cycle, social class and lifestyle, culture and subculture, relationship and relationship network from sociology. These concepts and theories used to depict and summarize the main target group of consumers that is 6 .. The IQAio GR519 is an upgraded lightweight version based on the original IQAio GR511. The original dual-cavity structure was changed to a bottom-edge structure, so that the minimalist design accommodates modern classrooms and conference rooms. With one IQProjector V2 and one IQView E3821, you can achieve flexible and intelligent classroom.