J461Y,J461HJ461Y,J461H正齿轮焊接截止阀
面议
J461Y,J461HJ461Y,J461H正齿轮焊接截止阀
面议
J561H，J561W，J561YJ561H，J561W，J561Y焊接伞齿轮截止阀
面议
J61HJ61H中法兰焊接截止阀
面议
J21WJ21W外螺纹截止阀
面议
J41H-10K，J41W-10KJ41H-10K，J41W-10K日标截止阀
面议
JJ.M1、JJ.M8JJ.M1、JJ.M8压力表截止阀
面议
J41W-150LBJ41W-150LB美标截止阀
面议
J41T，J11TJ41T，J11T铸铁截止阀
面议
WJ41H-150LBWJ41H-150LB，WJ41H-300LB美标波纹管截止阀
面议
J541H,J541YJ541H,J541Y伞齿轮截止阀
面议
北京式锻钢截止阀，北京式焊接截止阀
面议
J41Y-800LBJ11Y-800LB,J41Y-800LB锻钢截止阀
面议