Precautions for tracheal use 1. Don't let the hose friction and winding, excessive stretching, twisting, otherwise it will damage the hose and affect the working pressure; 2. If it is water or oil with too high temperature, please use heat-resistant pipes; 3. The length of the piping should be left with sufficient margin. When using the quick connect, the cross section of the hose should be installed flat and vertically; 4. When bending PE pipes, pay attention to the minimum bending radius requirements; 5. Before using the PE pipe, please use a pipe cutter to cut the pipe to a flat and round diameter. Then insert the connector vertically and press it into the bottom, try to pull it to make sure the connection is successful.