3D printing pen scheme development various 3D printing pen schemes mature scheme development3D printing pen scheme: the first and second generation schemes are shipped in large quantities. The charact
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LED advertising lamp LED shoe lamp LED badge lamp scheme developmentProfessional LED English billboard, English chest lamp program development!The lamp board can be made into hard lamp board and soft
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USB Keyboard recorderA national security department in Europe needs to record the computer operation of the staff. The software implementation method is obviously problematic, so it is very secret and
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Advertising printing machineIn Shanghai and other cities, advertising machines can be seen everywhere. Sometimes when you see advertisements, you can't remember the relevant contact information. I
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