such as thin lightweight precast concrete blocks, hollow clay blocks and timber studding covered with either plasterboard, fibreboard, matchboarding, plywood, chipboard, resin bonded blockboard or other form of cladding.

• 如用轻薄混凝土砌块、空心砖、细木条再覆以壁纸板、纤维板、假型板、胶合板、经纤化处理后的废纸板、松脂粘合板或各种类型的复合材料板等。