国机精工：公司航天类轴承仅在国内销售，头部的民营火箭公司基本都是公司客户

Group 1 - The company is a global leader in special bearings, holding over 90% market share in rocket and satellite bearings [2] - The company confirmed that its aerospace bearings are sold only domestically, and major private rocket companies are primarily its clients [2]