1. Insulating oil purifier
1.1. Series LB: Zhongji vacuum insulation oil purifier
1.2. Series LB-R: Zhongji vacuum oil purifier + regeneration
1.3. Series LA: Zhongji Double-stage vacuum insulation oil purifier
1.4. Series LA-R: Zhongji double-stage oil purifier + regeneration

2. Turbine oil purifier
2.1. Series LC: Zhongji vacuum turbine oil purifier
2.2. Series LC-R: Zhongji vacuum turbine oil purifier + regeneration

3.Lubricating oil purifier
3.1. Series LD-C: Zhongji vacuum lubricating oil purifier
3.2.Series LD-C-R: Zhongji vacuum lubricate oil purifier + regeneration
3.4 Series LD-C-F: Zhongji Fuel oil, Light oil purifier

4. Portable Mini Oil Purifier and Oiling Purifier
4.1 Series LY Zhongji Portable Mini Oil Purifier and Oiling Purifier
4.2 Series LY-V Zhongji Vegetable Oil Purifier

5. Engine oil recycling plant
5.1. Series LU Zhongji engine oil recycling plant
5.2. LR series distillation system oil recycling plant

6. Cooking oil / Vegetable oil purifier
6.1 Series LD-C used cooking oil / vegetable oil purifier
6.2 Series LD-C-R used cooking oil / vegetable oil purifier + regeneration

7. Chemical used for waste oil recycling
7.1. White clay / Activated clay
7.2. Water glass
7.3. TEPA

8. Insulating oil breakdown voltage tester