Special patent design , utilizes hydraulic full - automation systematic outward - turning type . the operator can regulate hydraulic pressure freely , and the operating space is not limited , exactly improves working efficiency and safety rate 独特的专利设计,采用液压翻开式全自动系统方式,操作空间不受限制,可调液压压力,显著提高了工作效率和安全生产率。