Acid biyu gefe engraving inji daidaita bakin karfe, jan ƙarfe, aluminum da sauran acid sinadarai engraving tsari, yadu ake amfani da shi a kan guda ko biyu gefe hollow engraving tsari kamar inscription, alama, kayan aiki da sauransu. Wannan jerin acid etching inji wuce EU CE takardar shaida.

Unit biyu windows zane, za a iya sauki aiwatar da wani multi-mataki hadewa a cikin engraving layi, amfani da kulawa mafi dacewa, da kuma ƙananan farashi.

Irin irin wannan na'urar tana da na'urar bidiyo, na'urar retractable, na'urar wanke, da dai sauransu, don maye gurbin na'urar da ta dace da farashin da ya fi girma.