After cleaning stainless bought, why would wipe with a paper towel after dark matter?
Not a quality problem, but not what you do not clean, but because the steel chrome and nickel to the surface will produce rust oxide film, and you wipe the black oxide film is, in fact, it is harmless natural phenomena, as long as you can dissolve a little white vinegar dip sponge after. Try cleaning with emery-free ingredients scouring pads, to avoid causing scratches on stainless steel surfaces.

1. The pan / pot stickers please if blowing it easier to tear off after heating with a hair    dryer, and less residual adhesive.

2 pot / lid please stained white vinegar with a sponge, inside and outside the pot containing the lid carefully wipe evenly, then detergent scrub clean.

3 followed by adding water to eight full join 20 ~ 30CC vinegar, after boiling the water, gas fire turn a small fire continued for about five minutes -8 minutes in order to put the new appliance thoroughly. Wash the cookware is heated to a low heat and moisture to dry or wipe it clean.

4 stainless steel appliances in the manufacturing process, the proper way to do the formalities required polishing action during polishing, stainless steel and high temperature friction roller machine, if lower temperatures will result in roundness pot offset (commonly known as pot deformation ), then must be between stainless steel and machine add green earth to reduce the temperature in the factory last procedure, these stainless steel finished placing dip ultrasonic cleaner to clean the cage with half an hour, it seems clean, but the stainless steel surface Like human skin, with our invisible pores, these apertures being more or less still remaining a little oil! The above three steps are also reinforcing the inadequacies of the ultrasonic cleaner. If you clean the requirements higher than normal! In this proposal, "Step 3" of white vinegar / lemonade heating firepower turn a small fire to boil Hou Wasi hold 10 minutes will be more clean.
 

Postscript:
1 Stainless steel appliances do not often use long home, cooking surface will appear multicolored stripes, this is a normal physiological phenomenon, due to the chemical composition containing a little water (chlorine or fluorine), for a long time, due to the oxidation of the surface of the stainless steel cookware! Some of them are used for cookware starch or dissolve the body itself does not affect the health caused by wiping cream white vinegar to remove or stainless steel.

2 if accidentally empty the pot roast, remember! Do not rush to the pot with water to cool the body, it would cause pot variant (heating or cooling) can not continue to be used, it is recommended that you move to the empty pot roast reach of children natural cooling shade, charred at the cooling water or white vinegar can be to soften about (30 minutes), depending on the procedure to clean the pan after cleaning the surface of the pot to check whether intact.
3. Remind you when cooking food kitchen cooking, please concentrate on food cooking until action is completed before making other matters.