南非采购需求：电动工具、手动工具、气动工具、焊接设备、户外动力设备、劳动保护用品供应商

I'm interested in sourcing a cordless rotary hammer that operates on 21V DC power. It would be great to get detailed specifications regarding its performance, durability, and any unique features it might have. Additionally, I would appreciate information on the available quantities, lead times for delivery, and your pricing structure, including any bulk purchase discounts. Could you also provide insight into the quality certifications your products hold and any warranty or after-sales support you offer? Understanding these aspects will help me make a more informed decision. If you have any promotional materials or technical documentation, I would love to review those as well. Looking forward to hearing back soon!