Terrace with Plenera decking

Has anyone heard anything about pressure-treated decking boards from Denmark? They are apparently not approved in Germany (Chemistry) but are supposed to be really good.

We are currently also facing the choice of terrace flooring. The terrace is elevated on a metal construction at about 1m height.

The terrace builder recommends the "Twinson Inoutic" WPC. However, the building materials dealer says that it splinters and does not last long and instead recommends the "Natur in Form" (the popular solid) WPC, which even has official building approval. Regarding Natur in Form, the terrace builder says it is useless and would get water stains.

Anyone have experience with these coverings? Or experience with other WPC that is durable, low-maintenance, and ideally still affordable?

I have now decided on a paved terrace.