Against the backdrop of intensifying competition in the global audio industry and growing demands for customized speakers, ZEH (Shenzhen Zhongyihong Electronic Technology Co., Ltd.)—a renowned audio specialist founded in 1998—has established three core pillars: a professional certification system, a safety control system, and a comprehensive after-sales support system. Leveraging its profound technical expertise and end-to-end service capabilities, ZEH anchors its operations in product professionalism, fully aligning with clients’ ideal design requirements while covering critical stages from safe material selection to precise cost control.
Additionally, by leveraging its unique “hardware-software integration + in-house mold factory” advantage, ZEH efficiently coordinates the adaptation of PCBA (Printed Circuit Board Assembly), speakers, casings, and wire harnesses. This eliminates the industry-wide issue of “misalignment between design and real-world application,” delivering efficient, reliable customized audio solutions to global clients. Its R&D and production capabilities have earned widespread recognition in global markets, solidifying its role as a leader in driving high-quality development in the audio customization sector.
Three Core Systems: The Foundation of ZEH’s Professional Strength
As a brand deeply rooted in the audio industry, ZEH recognizes that “systematic guarantees” are pivotal to winning client trust and achieving long-term growth. Through years of industry practice and technical refinement, its three core systems cover the entire client collaboration lifecycle—from product certification and safety control to after-sales support—providing robust safeguards for customized solutions.
1. Professional Certification System: Adhering to International Standards for Compliant, High-Quality Products
ZEH upholds strict international standards, operating a robust professional certification system. Its products fully comply with authoritative global certifications, including RoHS, CE, FCC, UL, and ISO, meeting industry-leading benchmarks in acoustic performance, electrical safety, and environmental protection.
To ensure the system remains effective and up-to-date, ZEH maintains a dedicated certification team that tracks real-time updates to audio-related regulations worldwide—such as new restrictions on hazardous substances under the EU’s REACH regulation and the US FDA’s latest safety requirements for audio equipment. This enables the team to integrate compliance into R&D and production proactively.
During the early R&D phase, the certification team provides end-to-end compliance guidance—from component selection and circuit design to structural planning—avoiding costly design rework due to non-compliance later. For example, in a customized in-vehicle audio project for a European client, ZEH’s certification team pre-advised the latest EU EMC (Electromagnetic Compatibility) standards for automotive electronics. The R&D team optimized the PCBA’s wiring and shielding accordingly, resulting in the product passing EMC testing on the first attempt—shortening the certification cycle by 15% compared to the industry average and helping the client enter the European market quickly.
2. Safety Control System: Full-Lifecycle Coverage to Safeguard Every Stage
Safety is fundamental to audio products. ZEH’s safety control system spans the entire lifecycle—from R&D and production to testing and delivery—creating an all-encompassing safety net.
R&D Stage: ZEH enforces a stringent material safety selection protocol, partnering with global leading component suppliers. All raw materials require complete safety test reports and must pass sampling inspections in ZEH’s in-house laboratory before storage and use, eliminating substandard materials from production. For instance, when selecting speaker diaphragm materials, ZEH tests not only acoustic performance but also temperature resistance and flame retardancy to ensure safety in extreme conditions.
Production Stage: ZEH has adopted an advanced MES (Manufacturing Execution System) to monitor and record data for every production step in real time. Critical stages—such as SMT placement accuracy for PCBs, pressure testing for speaker magnetic circuit assembly, and temperature/time control for casing injection molding—are governed by strict safety thresholds. Any parameter deviation triggers an automatic alarm and production pause, with technicians resolving issues promptly. The company also implements a “three-tier quality inspection system”: first-article inspection (to confirm process parameters), in-process inspection (to maintain quality), and full finished-product inspection (to meet delivery standards). Every product undergoes safety tests (e.g., insulation resistance, voltage withstand) before shipment, eliminating risks at the source.
3. Comprehensive After-Sales Support System: Rapid Response to Address Client Concerns
ZEH understands that high-quality customization extends beyond product delivery—it requires robust after-sales support. To this end, ZEH has established a global customer service center offering 24/7 multilingual support (English, German, Japanese, Korean, and more), with clients able to report issues via phone, email, or online chat.
For technical issues, ZEH adheres to a “1-hour response, 24-hour solution delivery” standard. Its after-sales team comprises acoustic, electronic, and structural engineers who are matched to client issues instantly. Remote guidance or video calls resolve most problems; for on-site support, ZEH dispatches technicians from global service centers within the shortest possible time. Additionally, ZEH provides “lifetime technical consultation”—even for out-of-warranty products. For example, a Southeast Asian client experienced minor sound distortion in ZEH-customized stage audio after 3 years; the after-sales team resolved the issue via remote debugging in just 2 hours (no parts replacement needed), significantly reducing maintenance costs and earning high praise.
R&D Strength: The Core of Aligning with Client Needs
ZEH prioritizes R&D innovation as its core growth driver. With a strong R&D team and advanced equipment, it delves deep into client needs—from safe material selection to precise cost control—to deliver customized solutions that balance professionalism and cost-effectiveness.
1. Safe Material Selection: Balancing Performance, Safety, and Sustainability
Material choice directly impacts audio product performance, safety, and environmental friendliness. ZEH’s dedicated material R&D team has partnered with universities and research institutions to establish an “Audio Material Laboratory,” focusing on developing and applying new materials. The team prioritizes non-toxic, recyclable green materials while ensuring acoustic performance (e.g., diaphragm damping coefficients, wire conductivity).
For example, when developing new headphone wires, ZEH replaced traditional PVC (which contains plasticizers and poses environmental risks) with a self-developed eco-friendly TPE material. This material offers excellent flexibility and weather resistance (stable use from -30℃ to 80℃), complies with EU RoHS 2.0 and China’s GB/T 26572-2011 standards (with hazardous substance levels far below international limits), and boasts a 90%+ recyclability rate. It has since become a favorite among eco-conscious clients.
ZEH also maintains a material database with parameters, certifications, and supplier info for thousands of audio-related materials, enabling the R&D team to quickly match client needs and accelerate development.
2. Precise Cost Control: Full-Process Optimization for Win-Win Outcomes
ZEH recognizes that cost control is critical to clients’ market competitiveness. It has built an integrated “R&D-production-supply chain” cost control system, embedding cost management into the R&D phase to balance quality and affordability.
R&D Phase: Engineers use “modular design” to break down products into standardized modules (e.g., PCBA functional modules, speaker modules). Clients combine modules to reduce redundant customization work and lower R&D costs. Simulation software optimizes structures and circuits to avoid material waste—for instance, in a portable Bluetooth speaker project, optimizing PCB layout reduced board area by 15%, cutting copper foil/component usage and lowering single-board costs by 8%.
Supply Chain Phase: ZEH leverages large-scale procurement and long-term supplier partnerships to secure competitive material prices. A strict supplier evaluation system (assessing quality, delivery, and pricing) ensures supply chain stability and cost advantages. Overall, ZEH helps clients reduce customized product costs by 10–20%, achieving “high quality at low cost.”
Production Capacity: Enabling Seamless Execution of Design
ZEH knows that excellent designs require strong production capabilities to be realized. Its “hardware-software integration + in-house mold factory” model ensures seamless adaptation of PCBA, speakers, casings, and wire harnesses—solving the “design-practice misalignment” issue and delivering customized solutions efficiently.
1. Hardware-Software Integration: Bridging R&D and Production
ZEH has abandoned the traditional “R&D-production separation” model. During R&D, the production team provides input based on equipment capabilities and process levels to ensure designs are manufacturable. For example, when the R&D team designed a speaker magnetic circuit, the production team suggested adjusting the magnetic steel-voice coil gap to match automated assembly equipment precision—improving efficiency and yield.
ZEH’s self-developed production management system synchronizes R&D and production data in real time. After design completion, drawings, parameters, and BOMs are uploaded directly to the system, eliminating manual re-entry errors. Production data (e.g., PCB placement yield) is fed back to R&D for continuous optimization, forming a “R&D-production-improvement” loop.
2. In-House Mold Factory: Rapid Response to Customization Needs
Casing precision and texture directly impact product appearance and user experience—and molds are key to casing quality. ZEH’s in-house mold factory is equipped with high-precision CNC machining centers, EDM machines, and injection molding equipment, covering the entire mold lifecycle (design, R&D, manufacturing, and injection).
For customized casings, the mold team delivers designs and manufacturing in as little as 15 days—30% faster than external factories. High-precision testing (e.g., coordinate measuring machines) ensures mold accuracy within 0.01mm. For example, a high-end headphone client’s aluminum alloy casing achieved a surface flatness error of ≤0.02mm, perfectly fitting internal components and avoiding assembly issues.
The in-house factory also enables rapid mold adjustments: if clients need casing tweaks during sampling, modifications are completed within 24 hours—shortening product iteration cycles.
3. End-to-End Adaptation: Eliminating Misalignment
ZEH’s “end-to-end adaptation team” (led by project managers) coordinates R&D, production, and procurement to ensure PCBA, speakers, casings, and wire harnesses work in harmony.
Early in projects, the team hosts cross-functional meetings to define technical parameters: PCBA engineers confirm board size/interface positions for casing compatibility; speaker engineers align dimensions with structural teams; wire harness engineers design lengths/routes to avoid tangling or installation issues.
During production, the team inspects key adaptation nodes (e.g., PCB-casing fit, speaker-harness signal stability) and resolves issues before mass production—ensuring designs translate into high-performance, reliable products.
Global Recognition: Leading the Future of Audio Customization
Supported by its three core systems, strong R&D, and efficient production, ZEH’s solutions serve clients in over 50 countries/regions across consumer electronics, automotive electronics, smart homes, professional AV, and medical devices. It supports startups with small-batch customization and Fortune 500 firms with large-scale supply chains—earning global trust.
As the procurement director of a leading global automotive electronics firm noted: “ZEH’s customized solutions are highly professional, with precise cost and delivery control. In our in-vehicle audio upgrade project, they cut costs by 12% and delivered 2 weeks early—perfectly aligning with our vehicle launch schedule. They are a reliable long-term partner.”
Looking ahead, ZEH will deepen its focus on audio customization, increase R&D investment, optimize its three core systems, and enhance its “hardware-software + in-house mold” model. It will deliver more innovative, cost-effective, and reliable solutions—helping clients gain a competitive edge and driving the global audio industry forward.
