南非采购需求：钢材种类、钢材价格、钢管、钢筋、金属钢材、钢结构住宅

I'm interested in exploring mobile application solutions for our business needs. We're looking for an app that can enhance user engagement, streamline operations, and potentially integrate with our existing systems. Could you provide detailed info on your mobile app offerings? Specifically, I'd like to know about features, customization options, and any previous projects you've completed in similar industries. Looking forward to your insights!