Hi,I'm new and hope someone here can give me some advice with my query.

I have cast aluminium garden furniture which is powder coated finish.

The advice for keeping it looking good was to use car wax,giving a very light cover and polish which has been done.The chairs,legs,lazy susan all look great.The problem is the area of the table.

The next evening it rained and now the table is covered with white,milky looking stains which look like where the raindrops have sat on the table!

I have washed the table with car car shampoo and also tried warm soapy water with white vinegar and the stains are still there!

I dont undersatend how only the table is le is stained and why?
Is it ruined?
Any advice on how to remove this staining will be gratefully received.

IMG_1374.jpg

Thanks.
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