Delivery: Fast delivery and well-packaged. The machine arrived on time and was protected properly during shipping. Quality: The build quality is solid and durable. The LCD touch screen is responsive and easy to use. The engraving result on metal bars is clear, smooth, and accurate. Design: Compact and easy to hold. The weight is comfortable for handheld use. The interface is user-friendly and the display is clear. Service: The seller provided helpful support and quick responses. The user manual is easy to follow, and they are willing to assist if any issues occur.