Cangzhou do into North China steel pipe Co., Ltd. is specialized in the production and sale of steel pipe and pipe fittings, one of the large enterprises, located in Hebei Provinceindustrial area.
沧州干成钢管有限公司是华北地区专业生产与销售钢管及管道配件的大型企业之一，座落在河北省盐山县工业区。
So large Numbers of victims of natural calamities flowing into the city from rural area of the North China as a result of nature disasters frequently, were the main source of the urban poor.
近代华北自然灾害频仍导致灾民大量流入城市，是贫民阶层的主要来源。
A large U-Mo deposit was found on the northern margin of north China Platform, where the Mesozoic and Cenozoic volcanics are developed. This area is widely covered by the Quaternary sediments.
在华北地台北缘中新生代火山岩发育区，发现大型铀钼矿床，其外围被第四系广泛覆盖。
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