英国采购需求：亮片纱、串珠纱、闪光针织纱、亮片装饰纱、手工珠子纱、针织用闪亮纱

I'm currently exploring options for yarns suitable for flat knitting applications. Could you provide me with information regarding the different types of yarns you offer? Specifically, I'm interested in their materials, weight options, and color variations available. Any details about bulk purchasing options would also be appreciated. Additionally, if you have any recommendations for yarns that excel in durability and performance for flat knitting, please include that info as well. I'm looking to understand the range of your products so I can make an informed decision. Thanks in advance for your assistance!