According to concrete block making machine

China's building materials such "borrow , mergers and acquisitions to
expand, then borrow money , and then expand " model has been questioned by
investors .
Multinational investment bank YUJIE concrete block making machine report pointed out at the end of last
year , China 's growth model building requires its return to the capital
markets every few years , if the issue of JS Series Concrete Mixer vicious cycle of debt
expansion and shares , there is no other way to keep growing. Therefore, the
bank maintained the China Building Materials " underperform " rating.