2. Prevent snow and freezing on the road surface.

3. Strictly control the operating temperature of liquid pipeline heat tracing.

4. Plastic pipe tracking.

5, plastic pipe heating, liquefied petroleum gas or ammonia storage tank bottom antifreeze insulation.

6, general pipeline antifreeze.

7. Wellhead oil production pipe tracing (instead of water jacket furnace) and anti-freezing of water injection wells.