During the environmental protection section of this week's iPhone Air launch event, Apple disclosed that the new model incorporates a 3D-printed titanium alloy USB-C port. When compared to conventional forging methods, this 3D-printed titanium alloy port boasts three primary benefits: it is more slender, sturdier, and cuts material usage by 33%, thereby substantially boosting its eco-friendliness. Metal 3D printing technology builds up the desired structure layer by layer using metal powder, enabling a lightweight design without compromising the port's durability. Although the manufacturing process is innovative, the iPhone Air's USB-C port still adheres to the USB 2 standard, offering a maximum data transfer rate of 480Mb/s. Moreover, the titanium cases of the Apple Watch Ultra 3 and premium Apple Watch Series 11 models also utilize 3D printing technology, resulting in a 50% reduction in raw material consumption compared to their predecessors. Apple highlighted that 35% of the device's mass is made up of recycled materials, with 80% of the titanium being recycled, marking another stride towards its environmental objectives.