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Auto Grinding Machine for Second Hand Phone
Jiutu Auto Grinding Machine is specifically designed for second-hand phone refurbishment. Removes scratches from phone screens and back glass in 3–6 minutes (minor) or 8–12 minutes (deep). Supports straight and curved screens. CE certified, 110V/220V available.
Key Features:
● Two models: black (requires external air compressor) or white (built-in compressor)
● Both 110V and 220V available
● Suitable for iPhone, Apple Watch, Samsung, Huawei, and more
● Polishes all phone screens and back covers including curved screens
● CE certified — environmentally friendly materials
● High cost performance — significantly saves labor and time vs. traditional replacement
Product Parameters:
| Speed | Infinite speed |
| Polishing Depth | Recommended <0.2mm |
| Applicable Models | Straight screen, curved screen |
| Polishing Time | 6–12 minutes |
| Voltage | 220V (optional 110V) |
| Machine Size | 500×500×750 mm |
| Package Size | 650×650×930 mm |
Frequently Asked Questions
Q1: Is the Auto Grinding Machine suitable for refurbishing second-hand phones at scale?
A: Yes. The Jiutu Auto Grinding Machine is specifically designed for second-hand phone refurbishment factories and recycling companies. It can process both straight and curved screens, supports infinite speed adjustment, and completes minor scratch removal in 3–6 minutes per phone. This makes it highly efficient for high-volume refurbishment operations compared to traditional manual methods.
Q2: What is the recommended polishing depth, and will it make the glass too thin?
A: The recommended polishing depth is less than 0.2mm per session. Only a very thin layer of glass is removed, which does not affect the structural integrity or daily use of the phone. After polishing, an oleophobic coating should be applied to restore the hydrophobic effect on the screen surface.