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BlackRidge Technology International, Inc. engages in the development and marketing of cyber defense solutions. The company focuses on the cyber security solution for protecting enterprise networks and cloud services, healthcare, industrial controls, and critical infrastructure systems. It offers BlackRidge Transport Access Control software, which authenticates user or device identity and applies security policies across networks and cloud services before application sessions are established. The company was founded by Robert Graham and John Hayes on March 15, 2004 and is headquartered in Reno, NV.

NACCO Industries, Inc., together with its subsidiaries, engages in the natural resources business. The company operates through three segments: Coal Mining, North American Mining, and Minerals Management. The Coal Mining segment operates surface coal mines under long-term contracts with power generation companies. Coal is surface mined in North Dakota and Mississippi. The North American Mining segment provides value-added contract mining and other services for producers of aggregates, activated carbon, lithium, and other industrial minerals; and contract mining services for independently owned mines and quarries in Florida, Texas, Arkansas, Virginia, and Nebraska. This segment also offers mining design and consulting services. The Minerals Management segment is involved in the leasing of its royalty and mineral interests to third-party exploration and production companies, and other mining companies, which grants them the rights to explore, develop, mine, produce, market, and sell gas, oil, and coal. NACCO Industries, Inc. was founded in 1913 and is headquartered in Cleveland, Ohio.

Trutankless, Inc. engages in the research, development, marketing, distribution, and sale of electric tankless water heaters in the United States. It provides water heaters that are designed to provide hot water supply under the Trutankless name; and home.trutankless.com, a customizable online control panel that enables dashboard, residential, and commercial users to obtain real-time status reports, adjust unit temperature settings, view up to three years of water usage data, and change notification settings from anywhere. The company was incorporated in 2008 and is headquartered in Scottsdale, Arizona.

Viomi Technology Co., Ltd, through its subsidiaries, develops and sells Internet-of-things-enabled (IoT-enabled) smart home products in the People's Republic of China. The company offers IoT-enabled smart home products, including smart water purification systems; smart kitchen products, such as refrigerators, oven steamers, dishwashers, range hoods, and gas stoves; and other smart products comprising air conditioning systems, washing machines, water heaters, smart water kettles, sweeper robots, smart locks, and other smart devices, as well as blenders. It also provides a suite of complementary consumable products and small appliances, such as portable fans, rice cookers, water quality meters, water filter pitchers, stainless-steel insulated water bottles, smart toilet, and food waste disposals; and value-added services. The company sells its products directly to consumers through its online platform, Viomi mobile app, and e-commerce channels, including Youpin, JD.com, Tmall, Pinduoduo, and others, as well as offline experience stores. Viomi Technology Co., Ltd has a strategic partnership with Xiaomi Corporation. The company was founded in 2014 and is headquartered in Guangzhou, China.