郑州宜欣是国内混凝土检查井模块砖机设备，检查井砌块机械，井壁墙体模块机械专业的生产厂家，从半自动到全自动化生产线。
Zhengzhou Yixin is a specialized manufacturer of concrete inspection shaft module brick equipment, inspection shaft building block machinery and shaft wall module equipment, with semi-automatic and automatic production lines.