There are 42 mine Wells in four major mine areas, Jixi, Hegang, Shuangyashan and Qitaihe, in Heilongjiang province, China, 70% of which are high gas mine Wells.
黑龙江鸡西、鹤岗、双鸭山和七台河四大主要矿区有矿井42个，其中70%都是高瓦斯矿井。
There are 42 mine Wells in four major mine areas, Jixi, Hegang, Shuangyashan and Qitaihe, in Heilongjiang province, China, 70%of which are high gas mine Wells.
黑龙江鸡西、鹤岗、双鸭山和七台河4大主要矿区有矿井42个，其中70%都是高瓦斯矿井。
The postcode of Jixi County, Xuancheng City, Anhui Province, China is 245300.
中国大陆 安徽省宣城市绩溪县 的邮政编码是 245300 。
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