whiteboard material. In addition to labor , you must also receive training from the company , such as training in product knowledge : introducing the background of the survey, mastering the product knowledge, giving detailed explanations on difficult problems, and giving special guidance ; conducting simulation training : the trial is one of the main contents. Through personal investigation , the trainees will truly appreciate the ups and downs of the investigation work , prepare psychologically for future work , and accumulate experience and ability to solve problems , thus improving the quality of market investigators in practice.. 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.