Analysis of water environment characteristics of the daquan river in dunhuang 敦煌大泉河水环境特征分析
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Daquan company regards craft brother as friends regards customers as god strives for development in competition takes “ non - stop technical innovation excelsior production zealous and thoughtful customer service ” as the principle of enterprise opens up new ways forward constantly 达权公司视同行为朋友、视用户为上帝，在竞争中求发展，矢志不渝以“永不停留的技术创新，精益求精的产品制造，热情周到的顾客服务”为企业宗旨，不断开拓前进。
