1. The business mainly operates globally, with core activities in the design, production, and sale of professional audio equipment, guitar amplifiers, headphones, speakers, and music-related apparel and accessories. 2. In the audio equipment industry, it is a globally well-known brand / first-tier player, with competitors including Bose, JBL, and Sennheiser. 3. The official website brand terms are "Marshall" or "马歇尔".