Yadongxing DW-4 temperature measuring paper is a temperature measuring paper that can be freely combined from the temperatures of 50°C, 70°C, 85 °C, and 120 °C . This DW-4 type temperature measuring paper is a temperature measuring paper with a temperature starting at 50°C. There are three types (50.60.70.80)/(50.65.80.120)/( 50.70.85.120 ), the specification is 12x40mm, and each sheet has 90 small pieces. DW-4 temperature measuring paper will change from white to red or other colors when it is overheated, and the change is washed, and the contrast is strong.

| model | temperature range | Number of temperature grids | Sheets per sheet | Size of each piece |
| DW-4 (50.60.70.80) | 50 °C, 60 °C, 70 °C , 80 °C | 4 cells | 90 tablets | 12x40mm |
| DW-4 (50.65.80.120) | 50 °C, 65 °C, 80 °C , 120 °C | 4 cells | 90 tablets | 12x40mm |
| DW-4 (50.70.85.120) | 50 °C, 70 °C, 85 °C , 120 °C | 4 cells | 90 tablets | 12x40mm |
1. DW-4 temperature measuring paper has 4 temperature grid windows, and the specification is 12x40mm/piece.
2. Yadongxing DW-4 (50.60.70.80)/(50.65.80.120)/( 50.70.85.120 ) temperature measuring paper is a fully sealed protective film, which has a strong waterproof and oil-draining function.
3. The temperature measuring paper is small and light, with the function of recording temperature, which is convenient for monitoring and low cost.
4. The temperature measuring paper is irreversible. Once the color changes, it cannot return to the original white.

Yadongxing DW-4 (50.60.70.80)/(50.65.80.120)/(50.70.85.120) real photo of temperature measuring paper

Comparison chart of Yadongxing DW-4(50.60.70.80)/(50.65.80.120)/(50.70.85.120) temperature measuring paper before and after overheating

Yadongxing DW-4(50.60.70.80)/(50.65.80.120)/(50.70.85.120) temperature measuring paper surface with protective film details

Yadongxing DW-4(50.60.70.80)/(50.65.80.120)/(50.70.85.120) thermometer paper display
Note: The above pictures are based on DW-4 (50.60.70.80) as an example. Yadongxing temperature measuring paper DW-4 can be combined at 50.55.60.65.70.75.80.85.120 degrees, such as 50.60.70.80 or 55.65. 75.85 combination etc. A sheet of 90 pieces, long in shape, each with four temperatures (can be customized).
关军 单纯利 葛纪全 肖红军 - 《中航工业沈阳黎明航空发动机(集团)有限责任公司产品检验检测中心》