产品供应不求，急需进行技术更新改造，以满足国内外市场的需求。
Our products . in short supply need to technology upgrading in order to meet market requirements.
经检验测试，其安全效益和经济效益显著，在煤矿设备技术性能更新改造中有巨大的推广应用价值。
Through testing and checking, it is necessary to promote and apply to technical characteristics update and reform of mine equipments, while yielding good safety returns and economic returns.
用DSW - 01型精密数字水位仪及相关技术对原系统进行了更新改造，从而保证了该系统的正常运行。
As the existent system is renewed by use of DSW-01 water level meter and related techniques, thus it is running normally now.
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