Kettler Table Tennis Tables I Was Wondering If Anyone Knew How 2 Clean/wax An Outdoor Ping Pong Or Table Tennis Table. (kettler Stockholm)

I was wondering if anyone knew how 2 clean/wax an outdoor ping pong or table tennis table. (kettler stockholm) - kettler table tennis tables

Over the years the color has disappeared (probably due to acid rain, etc.) and I wanted to wax or oil. I do not know what to use though.