Stupinskoye Mashinostroitel'noye Proizvodstvennoye Predpriyatiye AO (SMPP), also JSC Stupino Engineering Productive Enterprise, is a Russian Federation-based company engaged in production and after-sales service of carrier systems for helicopters. It offers accessories for Russian-made helicopters, including both commercial and military, such as Mi-8/17 and Mi-26(T), Mi-35M, Mi-28NE Night Hunter and Ka-52 Alligator. The Company conducts complete production cycle for rotorcraft accessories, including machine processing, thermo chemical processing, foundry production, production of rubber and plastic fittings, electroplating and painting, as well as production of instruments. Also SMPP conducts exhaustive wear and fatigue tests.
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