越南采购需求：包芯纱，包芯纱供应商，包芯纱购买，包芯纱制造商，包芯纱批发，包芯纱价格

I'm interested in learning more about the types of yarn you offer. Could you provide details on the various yarn materials and their specifications? I'm especially curious about the different fibers you have, such as cotton, wool, and synthetic options. If you have any specialty yarns, I'd love to hear about those too. Additionally, could you share information regarding color options and any available textures? I'm looking for a range of choices to meet various project requirements. If you have catalogs or samples available, that would be really helpful as well. Looking forward to your response!