Water-soluble cleaning device for toilet and drainage pipes, is mechanical device which dissolves into its constituents after use whereby front part of cleaning device is formed with round head
摘要
<p>The water soluble cleaning device is a mechanical device which dissolves into its constituents after use which on contact with water or with another supplied activating substance of kind known up to now. The front part of the cleaning device is formed with a round head (2).</p>
