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介绍了几种自制简单适用的设备：弯管机、集箱收口机、封头割边机。用此设备可降低锅炉的制造成本，增加企业与产品的市场竞争能力。
Introduced several simple and suitable for home-made equipment: pipe bender, header closing machine, head cutting machine. This equipment can reduce the boiler manufacturing costs and increase the market competitiveness of enterprises and products.