This is Lysa from Chinaunilink(Italy) Chengdu office. We have a purchase project on hexagon nuts and sleeve with high precision used on cars. Total 6 items and each item 3million pcs. But we need supplier is able to handle Production Part Approval Process (PPAP) documentation for quality control. Better you have OEM for some automotive customer experience before. We will send you drawing only you confirm you have such experience.