越南采购需求：PVC安全靴，PVC安全雨靴，钢头靴，钢头雨靴，油田鞋，PVC雨靴

I'm interested in learning more about the various types of boots you offer. Could you provide detailed information on the different styles available? I'm particularly curious about the materials used and any unique features that set them apart. Additionally, I'd like to know about your pricing structure for these boots. Are there bulk purchase discounts, and what are the lead times for orders? Any catalogs or product sheets you could share would be greatly appreciated to help me make a decision. Thanks!