非洲地区采购需求：手提包、普拉提包、背包、斜挎包、行李袋、健身包

I'm looking to create a unique card holder that incorporates heat-reactive leather. This material should change color or display an interesting effect when exposed to heat, adding an engaging element to the design. My intent is to provide a product that stands out in terms of both functionality and aesthetic appeal. I would like to know if your factory has experience working with heat-reactive leather and what options might be available. Additionally, I'm interested in the customization possibilities, including size, color variations, and any other features that can be incorporated. Please share any relevant samples or examples of past work. Looking forward to your insights on this project!