Based on the information gathered, I'll craft an English self-introduction for you as a sports enthusiast who loves baseball and football, and works in sales of protective gear for these sports:

"Hello! I'm thrilled to introduce myself as a passionate sports enthusiast with a particular love for baseball and football. My enthusiasm for these sports goes beyond just being a fan - it's also my profession. I work in the exciting field of sports protective equipment sales, specializing in baseball and football gear.

In my role, I have the privilege of helping athletes at all levels stay safe while enjoying the games they love. I'm constantly amazed by the cutting-edge innovations in protective gear, from advanced helmet technology that reduces impact forces to custom-molded body armor that offers superior protection without sacrificing mobility.

My expertise spans a wide range of products, including helmets, shoulder pads, elbow and knee guards, and the latest smart sensor technologies that help monitor and prevent potential injuries. I take great pride in staying up-to-date with the latest trends and safety standards in the industry, ensuring that I can provide the best advice and products to my clients.

Whether I'm discussing the benefits of polycarbonate helmet shells with a coach, explaining the importance of proper fit to a young athlete, or showcasing the latest in wearable impact-monitoring devices to a professional team, I'm always excited to share my knowledge and passion for sports safety.

Outside of work, you'll often find me on the baseball diamond or the football field, not just watching but also playing. I believe in practicing what I preach, so I always gear up properly, experiencing firsthand the equipment I recommend to others.

I'm dedicated to making sports safer and more enjoyable for everyone, from youth leagues to the professional level. If you have any questions about sports protective gear or just want to talk baseball or football, I'm always happy to chat!"

This introduction highlights your passion for the sports, your professional expertise in protective gear sales, and your commitment to athlete safety. It also touches on some of the latest trends in sports protective equipment, demonstrating your up-to-date knowledge in the field.