A key fact first: in the Chinese market, carbon crystal, bamboo-fiber and WPC boards are currently identical in production process — all are made from PVC resin, calcium powder, plasticizers and additives by high-temperature foamed extrusion, with PVC layers on both faces and a foamed core. The real differences lie in raw-material formulation and foaming rate.
- SPC vs WPC comes down to calcium powder content: SPC contains more, so it is harder, denser and heavier.
- WPC offers the richest color range, ideal for commercial spaces, showrooms and retail chains; SPC offers better impact resistance, ideal for offices and premium commercial spaces.
A caution: market pressure has led to industry-wide cost-cutting — reduced tolerance and thinner PVC reinforcing layers are common. Judge by formulation and quality, not by name. Major building-material brands are now promoting wall panels, and high-quality WPC and SPC panels are becoming increasingly popular.