Tonglu Kaixing stone Carving Craftwork co., Ltd. Is conveniently located in Zhongshan Industrial Park of Tonglu County, the hometown of stone materials of Hangzhou area.
桐庐凯幸石雕工艺有限公司位于杭州地区石材之乡——桐庐县钟山工业园区，交通便捷。
Lushan County Zhengda carbon Materials co., Ltd., located in Lushan County, Pingdingshan City Industrial Park, is a private joint-stock company, under the Henan radius of carbon group.
鲁山县正大炭素材料有限公司，位于平顶山市鲁山县工业园区，系民营股份制企业，隶属河南方圆炭素集团。
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