You cannot just "sign up". Renault must invite you.
The Renault Supplier Portal is the central platform for managing commercial, logistical, and quality-related exchanges between Renault Group and its approved suppliers. supplier portal renault
Overall Rating: ★★★★☆ (4/5)
The Renault Group Supplier Portal serves as the central digital gateway for the automaker’s extensive partner ecosystem. Following Renault’s commitment to modernizing its Industry 4.0 capabilities, the portal has evolved from a legacy document repository into a dynamic tool for supply chain collaboration. You cannot just "sign up"
Here is a detailed breakdown of the platform’s strengths and weaknesses. supplier portal renault