The document summarizes China's polyurethane (PU) and extruded polystyrene (XPS) foam sectors that use HCFCs as blowing agents. It outlines 9 PU foam sub-sectors that consume 38,100 metric tons of HCFC-141b annually. The XPS foam sector includes 430 enterprises using 34,900 metric tons of HCFC-22/142b annually in building and cold storage insulation. Challenges to phasing out HCFCs include a lack of affordable alternatives and the sector being dominated by small enterprises. China's foam sector phase-out strategy prioritizes sub-sectors with alternatives and establishing system houses, while providing technical support to smaller companies.