TITLE: COVERDWG No. MJO-137-0001SIZE: Dia0.492 L0.234MATERIAL: AL6061FINISH: ELECTROLESS NICKELHEAT TREATMENT: NONEAPPLICATION INDUSTRY: OPTICSUnder the supervision of professional quality inspectors, the products are inspected at every stage of production to ensure the superior quality of the products.MaiJin Metal Best Quality COVER Factory,Operating since 2006