摘要 |
<p>PROBLEM TO BE SOLVED: To easily confirm pollution of the interior of a drain hose by a user. SOLUTION: The drain hose comprises a connection part 50a formed of rubber and connected in an adhering state to a drain port 22a of a dresser 22 with sink by a pipe nut 30; and a transparent hose part 50b molded integrally with the connection part or fused to the connection part.</p> |