welding welded steel structure 1.material:metal 2.precision:0.010-0.002mm 3. ... and parts design, processing, modification5) Applicationappliance,automotive, building, clothing, computer, electrical, furniture, HVAC, printing, textile6) CertificationISO9001:20087) CommunicationEnglish, Japanese, German, Chinese8) MaterialAluminum Alloy,Steel ...