英国采购需求：定制鞋制造商、手袋制造商、鞋类制造商、定制手袋工厂、定制包制造商、手拿包制造商

I'm interested in exploring the possibility of designing a new line of trainers tailored to incorporate a height-boosting insole that offers a lift of 2.5 to 3 inches. I would appreciate it if you could provide a detailed quote on the costs involved in developing these shoes from the ground up. It would be great to have an understanding of the design, materials, and any minimum order quantities you require. Once I receive your quote, we can dive deeper into specifics such as timelines, potential collaboration on design features, and any additional requirements you might have. Looking forward to your response and hoping to establish a fruitful partnership!