| http://www.w3.org/ns/prov#value | - 2: next, does most everyone use chemicals when they wash all or most surfaces? almost everyone locally, including the suppliers, say dont use chemicals unless you are removing something specifically. however, when i talk to people online, or do more research, almost everyone uses chemicals. 3:i know when to use varying pressures on surfaces, and that gpm trumps psi when cleaning homes and such, bu
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