所面临的困难与问题主要是国内松香应用技术研究水平不高，产品市场有限，资金不足，信息不灵，行政于预。
The difficulties it faces are: low level of domestic resins application research, limited product market, insufficient funds and information, administrative interruption.
动力煤选煤厂大多存在洗选工艺简单、产品结构不灵活、难以适应煤炭市场及环保要求的现状。
Most coal selecting plant for power use have difficulties in simple tech. , single structure, wed capacity in market and negtive ability in meeting the requirements for environment protection.
市场有时能够为证券正确定价，其余的时间则不灵。
Sometimes the markets price securities correctly, other times not.
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