印度尼西亚采购需求：双头螺柱、蝶形螺母、自钻螺钉、方锥垫圈、非标、连接螺栓

I'm reaching out to gather more information about your range of fasteners. Specifically, I'm interested in understanding the various types you offer, including specifications, materials, and any unique features. It would be great if you could share details about their applications and performance characteristics as well. Additionally, if you have any catalogs, pricing information, or lead times available, that would be super helpful for my evaluation. I'm looking to compare options and make an informed decision. Please let me know about minimum order quantities and any customization possibilities as well. Thanks for your assistance!