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Hign-concerned Chemical: none Keyboards: TOUCHPAD,Backlit Keyboard Battery Capacity（mAh）: 3810 Network Communiction: Bluetooth-compatible,WIFI Touch Screen: YES Expandable storage: YES Hard Drive Interface: M.2 Memory Type: DDR5 Thermal Design Power: 20W

Hign-concerned Chemical: none Recommended use: Learing,Business Use,Daily Entertainment Keyboards: Numeric Keypad Battery Capacity（mAh）: 4000 Network Communiction: Bluetooth-compatible,WLAN,WIFI Touch Screen: no Expandable storage: no Hard Drive Interface: M.2 Memory

Hign-concerned Chemical: none Recommended use: Learing,Business Use,DESIGN,Daily Entertainment Keyboards: Numeric Keypad Battery Capacity（mAh）: 4000-5000 mAh Network Communiction: Bluetooth-compatible,WLAN,WIFI Touch Screen: no Expandable storage: YES Hard Drive Interface: SATA