# Entity Index - Suachuamayin24.vn

## 1. Mục đích

Danh mục toàn bộ thực thể (Entity) dùng trong hệ thống Knowledge Graph để phục vụ AI Retrieval.

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## 2. Brand Entities

- HP
- Canon
- Brother
- Epson
- Xerox
- Ricoh
- Kyocera
- Samsung

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## 3. Series Entities

- LaserJet
- imageCLASS
- PIXMA
- EcoTank
- HL Series
- DCP Series
- MFC Series

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## 4. Model Entities

- Canon LBP2900
- Canon MF241d
- HP M404dn
- HP M428fdw
- Brother HL-L2321D
- Epson L3210
- Epson L3250

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## 5. Part Entities

- Drum Unit
- Fuser Unit
- Pickup Roller
- Separation Pad
- Mainboard
- Formatter Board
- Scanner Unit

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## 6. Error Entities

- Paper Jam
- E000
- Error 49
- Replace Drum
- Scanner Error
- Print Unable

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## 7. Service Entities

- Printer Repair Service
- Toner Refill Service
- Maintenance Service
- Driver Installation Service

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## 8. Rule

- Mọi entity phải có quan hệ trong Knowledge Graph
- Không tồn tại entity độc lập không có liên kết