passivating cnc aluminum parts stem riser

{"cid":"91198728","title":"Bicycle Handlebar Stem Riser For 1.25\" Handlebar Mountain Road Bike MTB BMX","imgUrl":"https:\/\/img.chinax.com\/nimg\/2c\/29\/f6c550488f0bb0c54808e811015c-200x200-1.jpg","attrs":{"Price":"$0.9-10 \/ Pcs","Brand Name":"Tuofa","Model Number":"TF","Minimum Order Quantity":"10 Pcs","Delivery Time":"10-15 Work Days","Certification":"CE, ROHS, ISO9001","Place of Origin":"China, Shenzhen","Payment Terms":"L\/C, D\/A, D\/P, T\/T, Western Union, MoneyGram","Supply Ability":"30000 Pieces \/ Month","Packaging Details":"1.EPE Foam, poly bag, pp bag packaged for protecting products. 2.Standard export Carton boxes or wooden boxes. 3.We also can pack and ship according to customer's specific requirements.","Product Name":"Bicycle Handlebar Stem Riser for 1.25\" Handlebar Mountain Road Bike MTB BMX","Item Package Dimensions L x W x H":"5.3 x 2.6 x 1.8 Inches","Package Weight":"0.14 Kilograms","Logo":"Support Customizes","Colors":"Support Customizes","Size":"35mm"}}

{"cid":"91190770","title":"6 Speed Electric Assist Commuter Bike Wheel Size 20\" Aluminum Alloy Frame","imgUrl":"https:\/\/img.chinax.com\/nimg\/62\/91\/5b725672d4556e9a9ec940b3da42-200x200-1.jpg","attrs":{"Price":"Negotiable","Brand Name":"OEM","Model Number":"IMI-118","Minimum Order Quantity":"50 UNITS","Delivery Time":"60DAYS","Place of Origin":"China","Payment Terms":"L\/C, T\/T","Supply Ability":"2000 Units per Month","Packaging Details":"85% assembly, 5 ply carton box for export","Wattage":"250w","Voltage":"36V","Power Supply":"Lithium Battery","Wheel Size":"20\"","Motor":"250W brushless mid drive motor","Frame Material":"Aluminum Alloy","Fork":"alloy","Display":"LCD","Gear":"Shimano 6 speed","Product name":"Electric Assist Commuter Bike"}}