Spa Hot Tub: Industry Giants in North America 1. Jacuzzi Brands 2. HotSpring Spas (part of Watkins Wellness) 3. Cal Spas Spa Hot Tub: Manufacturer Power in Europe 1. Wellis (Hungary) 2. Aquavia Spa (Spain) 3. Roca Group (Spain) Spa Hot Tub: Manufacturing Power in Asia Pacific 1. Brands in Australia and New Zealand 2. Manufacturers in China