印度采购需求：紧固件、干壁螺钉、SDS、自攻螺钉、自钻螺钉、刨花板螺钉

I'm looking for a reliable supplier for self-drilling screws in various sizes, especially those with a hexagonal head design. It's essential that these screws are durable and suitable for different applications. Please provide information on the range of sizes available, along with any specifications that could help us determine the best fit for our needs. Additionally, we're interested in black screws across all sizes. We need to understand the options you offer, as well as pricing and minimum order quantities. In your response, it would be great if you could also include details about your manufacturing capabilities and lead times for production and delivery. We are keen on establishing a long-term partnership with a supplier who can meet our quality standards while providing competitive pricing. If you have a catalog or product list, that would be appreciated as well! Looking forward to your prompt reply with all necessary details.