... ensures work on jade and the high precision YD-4040 Mini Jade engraving machineTechnical Parameters:ModelYD-4040Stroke for Axis X and ... precision.,ensures fine work on jade. Mini Jade Engraving Machine high precision Beijing Yandiao CNC Machine Co.,LtdAdd:No.6,Daxingzhuang Industrial Zone ... ,Tongzhou District,Beijing,China Any interest in our machine,please contact us freely online or email.