保加利亚采购需求：国旗

I'm interested in purchasing a flag featuring the Poland design for use on a boat. The dimensions I'm looking for are approximately 30.5 cm by 45.5 cm. It would be great to know if you have this specific size available or if customization is an option. Additionally, please provide details on the materials used, potential colorfastness, and any applicable pricing or bulk order discounts. If there are other related products, I'd love to hear about those too. Looking forward to your response!