编码描述:,bars and rods,containing by weight more than 50 % of alumina(al2o3) or of a mixture or compound of alumina and of silica(sio2),crucibles,muffles,nozzles,other,plugs,reaction vessels,retorts,tubes and pipes 编码来源:韩国原始海关数据 产品标签: recording device,e meter,ammeter,quen,circuit tester,galvanometer,stanc,measuring apparatus,ore,voltmeter