Utilizing surface active technology, expanded ammonium nitrate was prepared by treating industrial ammonium nitrate. The physical properties of expanded ammonium nitrate.

用表面活性技术对工业硝酸铵进行处理制得膨化硝酸铵，研究了膨化硝酸铵的各项物理性能。

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A new ceramic coatings sealing faucet valve was developed by treating valve sealing surface with plasma spray surface treatment technology.

针对阀门密封面使用寿命低的的问题，采用等离子喷涂表面处理技术处理阀门密封面，研制了一种新型的陶瓷涂层密封旋塞阀。

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