... quality 2)punctual delivery 3)Professional maker 4)good workmanship Black oxidize metal hanger Material: Aluminum,Brass,Copper,Bronze,Steel,Stainless ... parts, railroad parts, medical parts, marine parts, lighting parts, pump body, valve parts, architectural parts and furniture parts so onStandard: ASTM ... , SGS, ISO Standard and Environment Protection OEM & ODM are welcome ! Black oxidize metal hanger