Floor-standing back-to-back dual-head dual-station screw machine.With a unique back-to-back design, it allows simultaneous operation on both sides and features an ultra-long locking stroke, enabling the simultaneous locking of two different products. Suitable for automatic screw locking of various consumer electronic products, such as mobile phones, cordless phones, calculators, navigators, speakers, cameras, laptops, tablet computers, learning machines, small household appliances, LED lamp modules, keyboards, etc.