After using bathroom cleaning http://shoponline.tescolotus.com/en-GB/ProductDetail/ProductDetail/6015581969 there is discoloration on a chrome faucet and also on the granite parts (is it actually granite?) and I don't have much idea how to fix it...

Photos of the discoloration
http://i63.tinypic.com/29lcyvl.jpg
http://i64.tinypic.com/2a0kggj.jpg
http://i65.tinypic.com/24cbjvs.jpg

So far I've found this options to buy

http://www.amazon.co.uk/HG-Colour-Intensifier-Granite-Natural/dp/B0012719HI for the stone

and for the faucet this

a) http://www.amazon.com/WKM-Home-Remover-Stainless-Tarnish/dp/B00E8ZT0UO
http://shoponline.tescolotus.com/en-GB/ProductDetail/ProductDetail/6000717029
c) http://www.amazon.com/Clean-On-Burn-Stains-Cleaning-From-Thailand/dp/B00IEUV5E8

Would some of it help? Or would you recommend something else? I also read online that #000 steel wool cloth is good – but I don't know where could I buy something like that.

Thanks for help

It looks as though permanent damage has been inflicted by using undiluted bleach as a cleaning agent.

I doubt there is a product capable of restoring the damage.

Edit

Were the directions for use followed when using the Duck product ?

http://www.central.co.th/en/g/%E0%B8%99%E0%B9%89%E0%B8%B3%E0%B8%A2%E0%B8%B2%E0%B8%82%E0%B8%88%E0%B8%B1%E0%B8%94%E0%B8%84%E0%B8%A3%E0%B8%B2%E0%B8%9A-mr-muscle-%E0%B8%82%E0%B8%99%E0%B8%B2%E0%B8%94-700-%E0%B8%A1%E0%B8%A5-%E0%B8%AA%E0%B8%B5%E0%B8%8A%E0%B8%A1%E0%B8%9E%E0%B8%B9

You shouldn't use anything more than mild soapy water on granite marble and caesar stone, looks like the cleaner you use had one of several chemical like ammonia in it.

Baking soda sprayed over the area let to dry over night should help remove some/most, who knows....id try a small area first where its as best hidden..then wiped off in the morning.

check this out...

“A cut lemon was left on my granite countertop and it created a big, white blotch.”

Joyce Smith, via Facebook

The fix: First, an explanation. The acid in lemon can corrode stone, leaving behind a white residue that’s similar to rust on metal. The bad news is that this is a tough stain. The good news? It is removable. Linda Cobb, the author of the Queen of Clean book series ($11, amazon.com), offers the following four-step plan. (1) Make a paste of 2 tablespoons baking soda and 1 teaspoon hydrogen peroxide (add more peroxide as needed until the paste becomes spreadable). (2) Using a washcloth, scrub the stain with the paste for 5 minutes. (3) Coat the stain with a thin layer of the paste and cover with plastic wrap; let sit overnight. (4) In the morning, when the paste has dried, remoisten the area with hydrogen peroxide, then wipe with a paper towel. Rinse with water and pat dry. Repeat if necessary.

HG is sold in Homepro and other stores in Thailand. Duck is not a good product to use to clean a toilet or urinal if you have a proper septic tank in my observation. I'm not sure how much you spent on the taps or faucets, but VRH have a 12 year warranty and seem to withstand abuse at my home and in commercial restrooms. What brand of faucet has failed? Different tap makers have different policies on replacement during the warranty period. SunnyJim5 is spot on with the Duck warning:

• Do not use with basin, bath, marble, terrazzo floor, and metal.

Is Duck substantially different than Vixol? I've used Vixol on ceramic sink basins and quite inexpensive chrome faucet handles with no adverse effect. I have been cautious not to get any on my granite bathroom and kitchen counters, though. I've tried it on an aluminum kitchen sink, but it doesn't seem to do much cleaning, but neither did it to do any etching/staining.

If that was true stainless steel or chrome, it would not have done that. You took the protective coating off and its like that forever

Best thing to clean metal surfaces is vinegar and or lemon.

What brand of faucet has failed? Different tap makers have different policies on replacement during the warranty period

Kohler ... it's this condo http://thinkofliving.com/2011/09/24/%E0%B8%84%E0%B8%AD%E0%B8%99%E0%B9%82%E0%B8%94-%E0%B8%A8%E0%B8%B8%E0%B8%A0%E0%B8%B2%E0%B8%A5%E0%B8%B1%E0%B8%A2-%E0%B8%9E%E0%B8%A3%E0%B8%B5%E0%B9%80%E0%B8%A1%E0%B8%B5%E0%B8%A2%E0%B8%A3%E0%B9%8C/

Granite counter tops can be restored. I have mine done every 5 years. Some people have them done every year. Just go on Youtube in type in "how to restore granite countertops" and you can see what is needed.