"Fifteenth National cleaning industry technology progress and clean industry development forum" (referred to as the "cleaning session") on September 2015 at 15-18 in Luoyang fragrance Jinling hotel. This year's "clean annual meeting", focus on promoting technological progress, "The Belt and Road '" theme, construction, key industry safety standard system on industrial cleaning operations management, engineering technology and product quality control, equipment cleaning wastewater treatment etc.. Kopay attended the meeting, the new cleaning equipment and demonstration and sent personnel to the scene to watch the show the backbone in the meeting.