This unit group also includes machine operators who operate previously set up production welding, brazing and soldering equipment.

此单元组还包括操作预先组合好的生产焊接，钎焊和锡焊设备的机器操作员。

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HeLuanShi system in engineering field, pressure-blasting machine is mechanism sand, cushion material, asphalt concrete and cement concrete aggregate ideal production equipment.

在工程领域，河卵石制砂机是机制砂、垫层料、沥青混凝土和水泥混凝土骨料的理想生产设备。

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Shenzhen Ridong Sewing Machine Co. , Ltd. is engaged in apparel embroidery equipment design and production enterprises, set up in Asia on the basis of needle Dealers.

深圳日东缝制设备有限公司是从事服装绣花专用设备设计生产的企业，建立于亚洲针车行的基础上。

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