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As one of the largest enterprise in china,henan huanghe whirlwing co.ltd. wasl lieted on shanghai stockexchange on november 26,1998,and now it hae developed into the largest production basis of super-hard materials and relevant tools.haunghe whiriwind is key high-tech enterise under state torch program , and owns enterprise technology center,post***tororal worksation and shanghai research and development center, it has got the post***toral workstation angd shanghai research and development center .it has go...
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