1. Leakage is strictly prohibited at the connection between the appliance and the gas pipeline.

2. The components used for connecting the appliance (valves, pipes, pipe fittings, etc.) should be products that meet the current national standards and have passed the inspection.

3. The connection parts should be firm and not easy to fall off. When connecting the hose, a special socket joint, threaded joint or special clamp should be used for fastening; the socket joint should be connected in the direction specified by the gas flow.

4. The length of the hose should be less than 3m. When used temporarily or seasonally, the length of the hose can be less than 5m. The hose should not be bent, stretched, or stepped on. Cracked and aged hoses should not be used.

5. When connecting the hose, a tee should not be used to form two branches.

6. The gas hose should not be installed in the following locations:

1) Places with flames and radiant heat;

2) Hidden places.

7. The gas pipeline connection should also comply with the relevant provisions of the current national standard "Urban Gas Design Code" GB50028.