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add k4 max and k9 max
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‎.github/badges/model-count.json‎

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{
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"schemaVersion": 1,
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"label": "models uploaded",
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"message": "116",
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"message": "129",
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"color": "brightgreen",
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"namedLogo": "github"
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}

‎K-Max-Series/K4 Max/README.md‎

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# Keychron K4 Max — Hardware Design Files
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> 96% wireless mechanical keyboard with compact full-size layout, tri-mode connectivity, and QMK/Launcher customization.
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**Product page:** [Keychron K4 Max](https://www.keychron.com/products/keychron-k4-max-qmk-wireless-mechanical-keyboard)
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![K4 Max](https://www.keychron.com/cdn/shop/files/K4-Max-Iconic-Features.jpg?crop=center&height=1200&v=1760933816&width=1200)
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## Specifications
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| Spec | Detail |
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|---|---|
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| Layout | 96% |
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| Size | 100-key |
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| Profile | Standard |
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| Knob | — |
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| Connectivity | Bluetooth 5.1 / 2.4 GHz / USB-C |
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| Polling Rate | 1000 Hz (2.4 GHz) |
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| Hot-swap | Yes |
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| Firmware | QMK / Keychron Launcher |
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| Firmware Source | [Link](https://github.com/Keychron/qmk_firmware/tree/wireless_playground/keyboards/keychron/k4_max) |
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## Repository Status
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CAD files for this model have not been added to this repository yet. This folder is prepared so related hardware design files can be dropped in later.
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## Planned File Types
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| File Type | Purpose |
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|---|---|
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| `stp` / `step` | Case, plate, and full assembly 3D models |
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| `dwg` | 2D plate and mechanical drawings |
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| `dxf` | Manufacturing-ready 2D geometry when available |
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| `pdf` | Reference drawings and dimension sheets |
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## Links
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- [Series Overview](../README.md)
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- [Firmware Source (K4 Max)](https://github.com/Keychron/qmk_firmware/tree/wireless_playground/keyboards/keychron/k4_max)
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- [Main Repository](https://github.com/Keychron/Keychron-Keyboards-Hardware-Design)
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## License
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This project is **source-available**. Personal and educational use is allowed, and commercial use is allowed for original compatible accessories within the limits of the license.
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**You may not use these files to copy, manufacture, sell, or distribute Keychron keyboards or mice, or substantially similar products, and you may not use Keychron trademarks as your own branding.**
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See the [LICENSE](../../LICENSE) for full terms.

‎K-Max-Series/K9 Max/README.md‎

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# Keychron K9 Max — Hardware Design Files
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> Ultra-slim 60% low-profile wireless mechanical keyboard with tri-mode connectivity and QMK/VIA support.
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**Product page:** [Keychron K9 Max](https://www.keychron.com/products/keychron-k9-max-qmk-wireless-custom-mechanical-keyboard)
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![K9 Max](https://www.keychron.com/cdn/shop/files/Keychron-K9-Max-QMK-Wireless-Custom-Mechanical-Keyboard-60-Percent-Layout-Fully-Assembled-for-Mac-Windows-Linux-Keychron-Milk-POM-Switch-Red.jpg?crop=center&height=1200&v=1752635235&width=1200)
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## Specifications
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| Spec | Detail |
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|---|---|
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| Layout | 60% |
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| Size | 61-key |
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| Profile | Low-profile |
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| Knob | — |
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| Connectivity | Bluetooth 5.2 / 2.4 GHz / USB-C |
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| Polling Rate | 1000 Hz (2.4 GHz) |
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| Hot-swap | Yes (Keychron low-profile optical/MX-compatible product family positioning) |
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| Firmware | QMK / VIA |
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| Firmware Source | [Link](https://github.com/Keychron/qmk_firmware/tree/wireless_playground/keyboards/keychron/k9_max) |
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## Repository Status
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CAD files for this model have not been added to this repository yet. This folder is prepared so related hardware design files can be dropped in later.
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## Planned File Types
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| File Type | Purpose |
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|---|---|
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| `stp` / `step` | Case, plate, and full assembly 3D models |
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| `dwg` | 2D plate and mechanical drawings |
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| `dxf` | Manufacturing-ready 2D geometry when available |
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| `pdf` | Reference drawings and dimension sheets |
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## Links
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- [Series Overview](../README.md)
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- [Firmware Source (K9 Max)](https://github.com/Keychron/qmk_firmware/tree/wireless_playground/keyboards/keychron/k9_max)
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- [Main Repository](https://github.com/Keychron/Keychron-Keyboards-Hardware-Design)
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## License
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This project is **source-available**. Personal and educational use is allowed, and commercial use is allowed for original compatible accessories within the limits of the license.
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**You may not use these files to copy, manufacture, sell, or distribute Keychron keyboards or mice, or substantially similar products, and you may not use Keychron trademarks as your own branding.**
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See the [LICENSE](../../LICENSE) for full terms.

‎K-Max-Series/README.md‎

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| [K1 Max](./K1%20Max/README.md) | TKL Low-profile | 87-key | — | [Link](https://github.com/Keychron/qmk_firmware/tree/wireless_playground/keyboards/keychron/k1_max) |
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| [K2 Max](./K2%20Max/README.md) | 75% | 84-key | — | [Link](https://github.com/Keychron/qmk_firmware/tree/wireless_playground/keyboards/keychron/k2_max) |
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| [K3 Max](./K3%20Max/README.md) | 75% Low-profile | 84-key | — | [Link](https://github.com/Keychron/qmk_firmware/tree/wireless_playground/keyboards/keychron/k3_max) |
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| [K4 Max](./K4%20Max/README.md) | 96% | 100-key | — | [Link](https://github.com/Keychron/qmk_firmware/tree/wireless_playground/keyboards/keychron/k4_max) |
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| [K5 Max](./K5%20Max/README.md) | Full-size Low-profile | 108-key | — | [Link](https://github.com/Keychron/qmk_firmware/tree/wireless_playground/keyboards/keychron/k5_max) |
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| [K7 Max](./K7%20Max/README.md) | 65% Low-profile | 68-key | — | [Link](https://github.com/Keychron/qmk_firmware/tree/wireless_playground/keyboards/keychron/k7_max) |
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| [K8 Max](./K8%20Max/README.md) | TKL | 87-key | — | [Link](https://github.com/Keychron/qmk_firmware/tree/wireless_playground/keyboards/keychron/k8_max) |
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| [K9 Max](./K9%20Max/README.md) | 60% Low-profile | 61-key | — | [Link](https://github.com/Keychron/qmk_firmware/tree/wireless_playground/keyboards/keychron/k9_max) |
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| [K10 Max](./K10%20Max/README.md) | Full-size | 108-key | — | [Link](https://github.com/Keychron/qmk_firmware/tree/wireless_playground/keyboards/keychron/k10_max) |
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| [K11 Max](./K11%20Max/README.md) | Alice Low-profile | 68-key | Yes | [Link](https://github.com/Keychron/qmk_firmware/tree/wireless_playground/keyboards/keychron/k11_max) |
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| [K13 Max](./K13%20Max/README.md) | 80% Low-profile with numpad | 90-key | — | [Link](https://github.com/Keychron/qmk_firmware/tree/wireless_playground/keyboards/keychron/k13_max) |
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├── K1 Max/
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├── K2 Max/
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├── K3 Max/
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├── K4 Max/
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├── K5 Max/
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├── K7 Max/
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├── K8 Max/
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├── K9 Max/
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├── K10 Max/
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├── K11 Max/
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├── K13 Max/

‎README.md‎

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| **Q Max Series** | Keyboard | Q0 Max, Q1 Max, Q2 Max, Q3 Max, Q5 Max, Q6 Max, Q8 Max, Q10 Max, Q12 Max, Q13 Max, Q14 Max, Q15 Max | Published CAD files for Q6 Max; README/model pages prepared for the others |
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| **Q Ultra 8K Series** | Keyboard | Q1 Ultra 8K, Q3 Ultra 8K, Q5 Ultra 8K, Q6 Ultra 8K, Q13 Ultra 8K | Published plate files for Q6 Ultra 8K; README/model pages prepared for the others |
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| **K Pro Series** | Keyboard | K1 Pro–K17 Pro (16 models) | Case, Plate, Full Model, Stabilizer |
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| **K Max Series** | Keyboard | K0 Max, K1 Max–K17 Max (12 models) | Case, Plate, Full Model, Stabilizer, Keycap on selected models |
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| **K Max Series** | Keyboard | K0 Max, K1 Max, K2 Max, K3 Max, K4 Max, K5 Max, K7 Max, K8 Max, K9 Max, K10 Max, K11 Max, K13 Max, K15 Max, K17 Max | Case, Plate, Full Model, Stabilizer, Keycap on selected models; README/model pages prepared for K4 Max and K9 Max |
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| **K HE Series** | Hall Effect | K2 HE, K4 HE, K6 HE, K8 HE, K10 HE | Published models include case, plate, full model, stabilizer, and selected keycap files; K6 HE is currently folder-only |
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| **K QMK Series** | Keyboard | K2 QMK | Case, Plate, Stabilizer, Keycap |
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| **L Series** | Keyboard | L1, L3 | Case, Plate, Knob, Full Model, Stabilizer |
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| **P HE Series** | Hall Effect | P1 HE, P2 HE, P3 HE | Published files for P1 HE; README/model pages prepared for P2 HE and P3 HE |
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| **Mouse Series** | Mouse | M1–M7, G1, G2 (11 models) | Shell, Full Model |
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**127 device models. 734+ design files. Source-available. Accessory-friendly.**
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**129 device models. 734+ design files. Source-available. Accessory-friendly.**
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![Keychron keyboards structure design](docs/assets/keychron-keyboards-structures.webp)
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## Directory Structure
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K1 Pro/ — Low-profile and standard K Pro models through K17 Pro
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K8 Pro/ — Example model folder with `K8-Pro-Keycap.stp`
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K-Max-Series/
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K0 Max/ — Numpad files alongside K1 Max–K17 Max keyboard models
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K0 Max/ — Numpad files alongside K1, K2, K3, K4, K5, K7, K8, K9, K10, K11, K13, K15, and K17 Max keyboard model folders
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K-HE-Series/
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K2 HE/ — Example model folder with Cherry and OSA keycap STEP files
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K-QMK-Series/

‎docs/repo-inventory.md‎

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Generated from the current filesystem using `docs/scripts/repo_inventory.py`.
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- Total model directories: **122**
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- Total model directories: **135**
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- Total data files across model directories: **734**
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## Series Summary
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| Q-Series | 15 | 147 |
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| Q-Pro-Series | 10 | 86 |
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| Q-HE-Series | 8 | 35 |
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| Q-Max-Series | 1 | 10 |
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| Q-Max-Series | 12 | 10 |
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| Q-Ultra-8K-Series | 5 | 4 |
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| K-Pro-Series | 16 | 129 |
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| K-Max-Series | 12 | 130 |
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| K-Max-Series | 14 | 130 |
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| K-HE-Series | 5 | 41 |
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| V-Max-Series | 8 | 94 |
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| P-HE-Series | 3 | 9 |
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- README present: yes
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- Extensions: `.dwg` x1, `.md` x1, `.pdf` x1, `.stp` x2
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### Q-Max-Series / Q0 Max
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- Path: `Q-Max-Series/Q0 Max`
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- Data files: 0
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- README present: yes
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- Extensions: `.md` x1
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### Q-Max-Series / Q1 Max
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- Path: `Q-Max-Series/Q1 Max`
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- Data files: 0
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- README present: yes
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- Extensions: `.md` x1
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### Q-Max-Series / Q10 Max
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- Path: `Q-Max-Series/Q10 Max`
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- Data files: 0
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- README present: yes
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- Extensions: `.md` x1
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### Q-Max-Series / Q12 Max
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- Path: `Q-Max-Series/Q12 Max`
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- Data files: 0
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- README present: yes
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- Extensions: `.md` x1
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### Q-Max-Series / Q13 Max
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- Path: `Q-Max-Series/Q13 Max`
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- Data files: 0
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- README present: yes
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- Extensions: `.md` x1
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### Q-Max-Series / Q14 Max
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- Path: `Q-Max-Series/Q14 Max`
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- Data files: 0
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- README present: yes
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- Extensions: `.md` x1
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### Q-Max-Series / Q15 Max
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- Path: `Q-Max-Series/Q15 Max`
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- Data files: 0
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- README present: yes
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- Extensions: `.md` x1
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### Q-Max-Series / Q2 Max
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- Path: `Q-Max-Series/Q2 Max`
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- Data files: 0
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- README present: yes
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- Extensions: `.md` x1
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### Q-Max-Series / Q3 Max
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- Path: `Q-Max-Series/Q3 Max`
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- Data files: 0
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- README present: yes
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- Extensions: `.md` x1
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### Q-Max-Series / Q5 Max
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- Path: `Q-Max-Series/Q5 Max`
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- Data files: 0
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- README present: yes
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- Extensions: `.md` x1
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### Q-Max-Series / Q6 Max
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- Path: `Q-Max-Series/Q6 Max`
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- Data files: 10
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- README present: yes
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- Extensions: `.dwg` x2, `.md` x1, `.pdf` x2, `.stp` x5, `.zip` x1
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### Q-Max-Series / Q8 Max
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- Path: `Q-Max-Series/Q8 Max`
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- Data files: 0
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- README present: yes
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- Extensions: `.md` x1
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### Q-Ultra-8K-Series / Q1 Ultra 8k
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- Path: `Q-Ultra-8K-Series/Q1 Ultra 8k`
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- README present: yes
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- Extensions: `.dwg` x1, `.md` x1, `.pdf` x1, `.stp` x8
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### K-Max-Series / K4 Max
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- Path: `K-Max-Series/K4 Max`
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- Data files: 0
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- README present: yes
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- Extensions: `.md` x1
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### K-Max-Series / K5 Max
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- Path: `K-Max-Series/K5 Max`
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- README present: yes
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- Extensions: `.dwg` x1, `.md` x1, `.pdf` x1, `.stp` x5
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### K-Max-Series / K9 Max
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- Path: `K-Max-Series/K9 Max`
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- Data files: 0
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- README present: yes
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- Extensions: `.md` x1
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### K-HE-Series / K10 HE
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- Path: `K-HE-Series/K10 HE`

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