... 2.Material : Carbon , Steel , Cooper , Alloy 3. Machined Metal Building Hardware 1.Certificate : ISO 9001:2000 2.Material : Carbon , Steel , Cooper ... , Alloy 3. MachinedMetal Building Hardware 1.Certificate : ISO 9001:2000 2.Material : Carbon , Steel , Cooper ... Phthalates , polycyclic aromatic hydrocarbons RoHS and so on . SHD Hardware & Building Materials