lime-free

无石棉密封材料,non-asbestos gasket... ... ) asbestos-free 无石棉 ) lime-free 无石灰 ) Probability of stone-free 无石概率 ...

无灰浸灰剂,lime-free... ... ) lime-free liming agent 无灰浸灰剂 ) lime-free 无灰浸灰 ) auxiliary liming agent 浸灰助剂 ...