I had quite a few deep clear coat scratches on my car. I tried compounding it before with TONYIN compound but it didn't help much. So finally today I did wet sanding of those scratches with 2000 and 3000 grit. Then I used Koch Chemie heavy cut followed by fine cut. Then finally used Autoglym SRP.
The results were really really good.
I was lucky to buy Koch Chemie products in Pakistan through their facebook page.