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  • Bridgestone

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    () is a multinational auto and truck parts manufacturer founded in 1931 by in the city of Kurume, Fukuoka, Japan. The name Bridgestone comes from a calque translation and transposition of ishibashi, meaning "stone bridge" in Japanese. As of 2017, the company is the largest manufacturer of tyres in the world, followed by Michelin (France), Goodyear (United States), Continental (Germany) and Pirelli (Italy). Bridgestone Group had 181 production facilities in 24 countries as of July 2018.

  • Kevlar

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    Kevlar is a heat-resistant and strong synthetic fiber, related to other aramids such as Nomex and Technora. Developed by Stephanie Kwolek at DuPont in 1965, this high-strength material was first commercially used in the early 1970s as a replacement for steel in racing tires. Typically it is spun into ropes or fabric sheets that can be used as such or as an ingredient in composite material components. Kevlar has many applications, ranging from bicycle tires and racing sails to bulletproof vests, because of its high tensile strength-to-weight ratio; by this measure it is 5 times stronger than steel. It is also used to make modern marching drumheads that withstand high impact. When used as a woven material, it is suitable for mooring lines and other underwater applications. A similar fiber called Twaron with the same chemical structure was developed by Akzo in the 1970s; commercial production started in 1986, and Twaron is now manufactured by Teijin.

  • Pirelli

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    Pirelli & C. S.p.A. is a multinational company based in Milan, Italy, listed on the Milan Stock Exchange since 1922, with a temporary privatization period by the consortium led by the Chinese state-owned enterprise ChemChina. The company is the 5th largest tyre manufacturer behind Bridgestone, Michelin, Continental and Goodyear, and is focused on the consumer business (tyres for cars, motorcycles and bicycles). It is present in Europe, Apac, Latam, Meai, Nafta and C.I.S., operating commercially in over 160 countries. It has 19 manufacturing sites in 13 countries and a network of around 14,600 distributors and retailers. Pirelli has been sponsoring sport competitions since 1907 and is the exclusive tyre supplier for the FIA Formula One World Championship for 2011–2023 and for the FIM World Superbike Championship. Pirelli's headquarters are located in Milan's Bicocca district. Pirelli is now a pure tyre manufacturing company. In the past it has been involved in fashion and operated in renewable energy and sustainable mobility. On October 4, 2017, Pirelli returned to the Milan stock exchange after focusing its business on pure consumer products (tyre for car, motorcycles, bicycles) and related services, and separating the business of industrial tyre. Pirelli has published its Pirelli Calendar since 1964, which has featured the contribution of famous photographers over the years like Helmut Newton, Steve McCurry, Peter Lindbergh, Richard Avedon, Bruce Weber, Herb Rits and Annie Leibovitz.

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