... suitable for those materials: enamel plate, marble, porcelain ,wooden wall, glass ,cement wall. pvc plate, stainless plate and so on.Material: PET ... time: 10 yearsIt’s suitable for up three year old children .Advantage:1No mucilage glue, re-usable.2Waterproof and dustproof3Pothook can ... walls.8Can suffer project within 5kgs 2011 new designed reusable wall hook