Core Viewpoint - HIFIMAN Technology Group Co., Ltd. is pursuing an IPO on the Beijing Stock Exchange, with significant involvement from its fifth-largest customer, Huizhou Lagrange Trading Co., Ltd., which was established by a former employee of HIFIMAN's wholly-owned subsidiary [1][2] Group 1: Company Overview - HIFIMAN primarily engages in the design, research, production, and sales of audio products under its own brand "HIFIMAN," including headphones and playback devices [2] - The company has adopted a subcontracting production model, with over 20% of its main business costs attributed to outsourcing in 2024 [5] Group 2: Customer and Financial Performance - Lagrange Trading became HIFIMAN's fifth-largest customer in 2023 and the first half of 2024, with sales amounts of 4.58 million yuan and 1.32 million yuan, respectively [2] - Lagrange Trading reported net profits of 10,600 yuan in 2023 and a loss of 73,700 yuan in the first half of 2024, attributed to a decline in market demand [3] Group 3: Acquisition and Integration - To reduce related-party transactions, HIFIMAN acquired 100% of Lagrange Trading's shares in June 2024, integrating it into its consolidated financial statements [4] Group 4: Outsourcing and Supplier Relationships - HIFIMAN's significant reliance on subcontractors includes various external suppliers for processes such as electroplating and assembly, with a notable increase in revenue from true wireless earphones, rising from 0.54% in 2022 to 11.38% in the first half of 2024 [5][6] - Key external suppliers include Dongguan Shijie Taixin Shengke Hardware Processing Store, which also leases properties to HIFIMAN's subsidiaries for production and office use [6]