Patent for technical development
| product name | Patent number | product name | Patent numbe |
| 1. Perforted corrugated packing | ZL92221678.9 | 2. Single Guide Shoe Diamond Net Making Machine | ZL92218357.0 |
| 3. High-Efficiency Catalytic Distillation Packing | ZL92222666.0 | 4. Air Separation Packing | ZL96231028.X |
| 5. Random Packing Concentric Flat Ring | ZK99227491.5 | 6. Concentric Flat Ring | ZL99228188 |
| 7. Tray-type Liquid Re-distributor | ZL99228794.4 | 8. Line-type Liquid Re-distributor | ZL021385017 |
| 9. Pipe-type Liquid Re-distributor | 20042002406.2 | 10. High-Capacity Arc Packing | ZL032196806 |
