当升科技：签订年产30万吨磷酸（锰）铁锂项目合作协议

array(1) { [463873]=> array(2) { [2]=> array(4) { [0]=> string(12) "重大合同" [1]=> string(12) "签订协议" [2]=> string(6) "磷酸" [3]=> string(12) "当升科技" } [4]=> array(1) { [0]=> string(19) "同花顺7x24快讯" } } }