rich88slot| Luyin Investment (600784.SH): Holding company competes for rock salt mineral census and prospecting rights

鲁银投资(600784rich88slot.SH)公告rich88slot，公司控股子公司鲁银(菏泽)盐业有限公司(“菏泽盐业”)以27rich88slot.2万元竞得山东省单县毛庄地区岩盐矿普查探矿权。