| 摘要 |
<p>The dry cleaning composition is mixed with a liquefied gas and stored under pressure in a vessel sealed by a valve. The foam is pref. projected on to the surface to be cleaned by opening opening the sealing valve which is pref. combined with a sprayer. The foams a thick, stable layer on surface irrespective of their inclination. It absorbs stains and dust and it is readily removed by wiping without the operator contacting the foam. It us used for cleaning automobiles, windows, tiles, metals and industrial machinery.</p> |
