Sand resource with good quality is very rich in Tancheng county, which mainly concentrates in Yihe and Shuhe river.

郯城县河砂资源丰富，砂质优良，主要集中分布于沂河和沭河内。

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Sand resource with good quality is very rich in Tancheng county, which mainly concentrates in Yihe and Shuhe river.

郯城县河砂资源丰富，砂质优良，主要集中分布于沂河和沭河内。

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