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J-Star Holding Co., Ltd. supplies carbon-fiber composite parts that customers incorporate into products sold under their own brands. Product sales generate most revenue, with bicycle frames the largest product line; services also contribute a substantial share. Customers generally place purchase orders rather than sign formal supply contracts. Most revenue comes from Europe, and two customers together supply most of the company’s revenue.
J-Star develops product structures and its own resin formulas, procures raw materials, and oversees development and quality control. Its headquarters and R&D center are in Taiwan. After selling controlling stakes in Dongguan YMA and Dongguan Forwell, it retained both as its main outside manufacturers under supply agreements. In January 2026, it announced an exit from China; production bases in the United States and Europe remain plans rather than established operations.
The business depends on customer orders, reliable outsourced production and access to carbon-fiber yarn and resin. Sourcing yarn from Japan requires a Japanese export license. J-Star generally negotiates prices using estimated costs plus a markup before accepting orders, so sudden material or labor cost increases after confirmation can squeeze its margins.
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J-Star Holding Co., Ltd.’s results hinge on orders from its concentrated, predominantly European bicycle-brand customers and its manufacturing transition following its announced exit from China, rather than on the supplied sporting-goods companies.
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