| File name | Type | Size | Download |
| PR320 Thermocouple Calibration Furnace | | ||
| PR340 Standard platinum resistance annealing furnace | 1MB | | |
| Standard Platinum Resistance Thermometer Manual | 2MB | | |
| PR231 Series portable multifunction calibrator | Technical support | 5MB | |
Changsha Panran Technology Co., Ltd.