This method of fertilizing can be used in the cold region in North China.
可作为北方寒地稻作区的施肥技术。
Sandstorms is one of the major natural disasters in north China region.
沙尘暴是我国北方地区的主要自然灾害之一。
In Cangzhou City of north China region Pipe professional production of large enterprises.
沧州市华昊钢管有限公司是华北地区专业生产钢管的大型企业之一。
In Cangzhou City of north China region Pipe professional production of large enterprises.
沧州市华昊钢管有限公司是华北地区专业生产钢管的大型企业之一。
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