aluminum silencer, car muffler air-condition 1. Material: 6061,6063,6082 2. Diamater available: 40,45,50,54,74mm aluminum silencer, car muffler air-condition Material: 6061,6063,6082 Diamater available: 40,45,50,54,74mm (We can also build new moulds to meet customized diameters)Style: As per customer's designUsage: Car air-conditioning systemSupply ability: 3000000 pieces per yearReasonable FOB ...