I've used this Soft99 Glass Stain Cleaner to remove watermarks and 1 year old Ultra Glaco coating on my windscreens... Very good...
http://www.soft99.co.jp/english/products/c....html?pid=05066
You can also try Soft99 Glass Compound Z like what mot88 suggested... You can find it at Autobacs Klang or Eneos...
This post has been edited by blurjoey: Feb 15 2016, 11:17 AM
Blur windscreen after applying watermark removal, Ask for solution
Feb 15 2016, 11:17 AM
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