Hardware handle how to cleaning
how hardware handles derusting:
ammonium acetate in the amount of clean water, after being fully dissolved heating to 70 cc or so;
dip in with soft cloth foot scrubbing solution hardware handle rusted parts, until the rusty spot disappear; And then used for cloth to wipe the residual solution, chrome shining first.
small parts can also be used in the solution soak for a while, take out after dry, also can achieve the same effect. Finally, with a little oil to wipe with dry cloth.