welding welded steel structure 1.material:metal 2.precision:0. ... Specialization mold and parts design, processing, modification5) Applicationappliance,automotive, building, clothing, computer, electrical, furniture, HVAC, printing, textile6) ... CertificationISO9001:20087) CommunicationEnglish, Japanese, German, Chinese8) MaterialAluminum Alloy,Steel Alloy,Brass Alloy etc.9) File.dxf .dwg .pdf ...