How to prevent stainless steel to rust?

Normally appearance of clear stainless steel uses 1. a Jian probably Wen Shui is OK, (iron line technology) not necessary the scour that uses major.
2. if foot 2 do not get effective, be grease normally, can brush with soft cloth first, wash with neuter scour next, paying attention to is neuter.
If 3. still is to divide do not drop that to use weak scour, it is alcohol is wiped forcibly probably.
If appearance of 4. stainless steel has acidity (iron line technology) , or alkalescent wait for material, want to erode with clear water immediately, use neuter scour next normally with respect to thing of it doesn't matter