Comprehensive utilization and finishing and deep processing of nonmetal minerals (andalusite, bentonite, dolomite, crystalline graphite, perlite and zeolite) (excl. exploration and exploitation

• 非金属矿（红柱石、膨润土、白云石、晶质石墨、珍珠岩、沸石）综合利用及精细加工（勘探、开采除外）