Production name :leaf spring Place of origin:shandong , china (mainland) Thickness : from 6 mm to 50 mm Width: from 45mm to 152mm Color:as your required Materials:sup7, sup9, sup9a, sup10, sup11, sup11a, 60si2mn, 55crmna and 50crva are available Quality level: excellent quality for international market, made in china Certificate: Ts16949, ISO9001,ISO14000,OHSAS18000 Car make :siertai, man, volvo , faw jiefang j6 Lead time:within 30-40 days after receiving orders. Pollywood carton