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Can you do OEM or ODM?
Yes, we provide both OEM and ODM services. We can manufacture machines under your brand or develop customized solutions based on your requirements.
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What screw sizes can your machines handle?
Zaijin's Automatic Screw Fastening Machine is suitable for screw sizes of M1.0–M6.0 with screw length below 25mm / total length greater than 1.3 times the diameter of the screw cap. For more types of screws, please contact us! 
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Which applications are suitable for screw fastening machines?
Automatic Screw Fastening Machines are widely used across multiple industries, including 3C & consumer electronics (such as mobile phones, laptops, tablets, wearable devices, PCBs, and electronic housings), automotive and automotive electronics (including sensors, control modules, connectors, switches, and interior electronic assemblies), LED, display & optoelectronics (such as LED displays, lighting products, LCD modules, and related assemblies), home appliances & smart devices (including household electrical appliances, power tools, and smart home products), medical & new energy equipment (such as medical devices, power supplies, battery modules, and electrical equipment), industrial & multi-material products involving plastic, metal, and glass components, as well as toys and hobby products like electronic toys, robotic kits, and educational devices. 
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What types of automatic screw tightening machines do you manufacture?
We manufacture desktop, floor-standing, and inline automatic screw tightening machines, suitable for different production volumes and automation levels.
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Do you provide customized screw driving solutions?
Yes. We offer fully customized solutions, including machine structure, screw feeding method, torque range, fixtures, and 3-axis, 4-axis, or multi-axis systems.
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Do you offer free sample testing?
Yes, we offer free sample testing. You only need to send us your screws and workpieces, and our engineers will conduct testing and provide detailed videos and reports.
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How do you ensure machine quality before delivery?
Each screw tightening machine undergoes strict factory testing, accuracy verification, and trial operation before shipment.
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What is the lead time?
Standard machines usually take 7–15 days. Customized machines take approximately 21–45 days, depending on specifications.
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What is the price of an automatic screw tightening machine?
The price depends on machine type (desktop, floor-standing, or inline), axis configuration, automation level, and customization requirements. As a direct manufacturer, we offer factory-direct pricing with no intermediaries. Please contact us with your application details for an accurate quotation.
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How are the machines packaged for shipping?
All machines are packed in shockproof wooden crates to ensure safe transportation for international shipping.
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Do you provide installation and training?
Yes. We provide on-site or remote installation guidance, operator training, and machine commissioning support.
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Do you provide warranty and after-sales service?
All machines come with a 1-year warranty (except consumables) and lifetime technical support. We have a professional after-sales team—if you have any questions, please feel free to contact us.
