| Model Number | DY-800 | 
|---|---|
| Power Source | Electric | 
| Warranty | 1 Year | 
| After-sale Service | Online technical support | 
| Material | Plastic | 
| Model Number | RK-2.5x+RK-191 | 
|---|---|
| Power Source | Optic,Electric | 
| Warranty | Lifetime(under non-human damage) | 
| After-sale Service | Return and Replacement | 
| Material | Plastic, Optical Glass | 
| Model Number | RK-3.5x+RK-191 | 
|---|---|
| Power Source | optic and electric | 
| Warranty | 1 Year | 
| After-sale Service | Return and Replacement | 
| Material | Plastic, glass | 
| Model Number | RK-3.5x | 
|---|---|
| Power Source | optic | 
| Warranty | 1 Year | 
| After-sale Service | Return and Replacement | 
| Material | Plastic, glass | 
| Model Number | RK-3.0x | 
|---|---|
| Power Source | optic | 
| Warranty | 1 Year | 
| After-sale Service | Return and Replacement | 
| Material | Plastic, glass | 
| Model Number | RK-2.5x | 
|---|---|
| Power Source | optic | 
| Warranty | 1 Year | 
| After-sale Service | Return and Replacement | 
| Material | Plastic, glass | 
| Model Number | 2.5X 3.0x | 
|---|---|
| Warranty | 1 Year, 1 Year | 
| After-sale Service | NONE | 
| Instrument classification | Class I | 
| Type | Cleaning & Filling Teeth Equipments | 
| Model Number | NS31-3.5X TTL | 
|---|---|
| Warranty | 1 Year | 
| After-sale Service | Free spare parts | 
| Instrument classification | Class I | 
| Application | dentist/surgical operation/ENT | 
| Model Number | NS31-3.5X TTL | 
|---|---|
| Power Source | Electric | 
| Warranty | 1 Year | 
| After-sale Service | Free spare parts | 
| Material | TR90, Titanium, colorless optical glass | 
| Model Number | NS31-2.5X | 
|---|---|
| Power Source | Electric | 
| Warranty | 1 Year | 
| After-sale Service | NONE | 
| Material | TR90, Titanium, Colorless Optical Glasses |