印度采购需求：紧固件、石膏板螺丝、SDS螺丝、自攻螺丝、自钻螺丝、刨花板螺丝

I'm looking to source self-drilling screws for an upcoming project and would appreciate more details about your offerings. Specifically, I need information on the material types, finish options, and any available sizes or specifications you can provide. Additionally, could you share your pricing, minimum order quantities, and lead times for these screws? It would be great to understand your best practices for quality control and any certifications you hold. Looking forward to your prompt response!