自贡市精强硬质合金有限公司
Exhibit Profile：
Cemented carbide valve spool seat carboloy nozzle; Cemented carbide sealing ring
Cemented carbide valve spool seat carboloy nozzle; Cemented carbide sealing ring
Website：www.jqcarbide@zgjqhj.com www.jackchen@zgjqhj.com