SMEs pay more than half of the total tax,provided the most jobs,play an important role in the national economy,But it is difficult to obtain financing of this problem has always restricted the development of SMEs.To solve the financing difficulties and expand the financing channels of SMEs,National Association of Financial Market Institutional Investors(NAFMII)in 2009 to create SEMCN.2012,the product registration and circulation reached its peak,but then all the way down,to 2016 registered and issued data a...