date:2019-04-17~2019-04-19
ses, subway stations, bus stops, elevator buildings and promote them in all aspects.
5. The organizing committee shall print 300,000 tickets and invitation letters, and invite the industry to visit and purchase through mailing and on-site distribution. Professionals in east China, central China and north China will be invited by telephone appointment and home visit.
6. Through years of accumulation, the organization has a huge database of audience, and invites visitors by phone, text message and