Precision Metal Machining, Stamping & Component Manufacturing
FONYI PRECISION Industrial Metal Machining, Progressive Stamping & Precision Springs
Direct manufacturing supply of genuine FONYI PRECISION hardware: Asahi TP75 progressive die stampings, multi-axis CNC mill-turn components (OD 2.5–200mm), precision springs, titanium, and audio parts.
Precision Metal Machining, Stamping & Component Manufacturing
Progressive sheet stamping, acoustic audio hardware, multi-axis mill-turn parts, precision springs, biocompatible titanium machining, and surface treatments.
Precision Progressive Sheet Metal Stamping on Asahi Seiki TP75 Presses
High-speed progressive die stamping for tight-tolerance electronic, automotive, and industrial metal components. Equipped with automated continuous stamping equipment including Asahi Seiki TP75 presses, Fonyi Precision processes precision sheet metal strips from 0.1 mm to 4.0 mm with repetitive contour tolerances down to ±0.01 mm. In-house toolmakers fabricate long-life progressive dies using premium SKD11 alloy and tungsten carbide inserts.
Machinery: Automated progressive stamping presses including Asahi Seiki TP75 capacity units
Thickness range: Precision processing of strip and coil stock from 0.1 mm to 4.0 mm
Specialized metal stampings for professional headphones, acoustic headsets, and personal audio devices. Drawing upon 45 years of specialized audio hardware production since 1977, Fonyi Precision supplies calibrated stainless steel headbands that endure over 50,000 bending cycles without tension loss, alongside cosmetic aluminum outer earcups and sliders finished with directional hairline brushing and PVD vacuum coating.
Product scope: Flexible spring stainless headbands, decorative shell covers, sliders, and pivots
CNC Turning & Milling Multi-Axis Composite Machining (OD 2.5mm to 200mm)
Precision multi-tasking mill-turn machining delivering complete components in a single setup across diameters from 2.5 mm up to 200 mm. Utilizing multi-axis CNC mill-turn machining centers equipped with live rotary tooling and sub-spindles, Fonyi Precision produces complex rotational workpieces from 2.5 mm up to 200 mm diameter in a single chucking. Eliminating secondary repositioning preserves concentricity under 0.005 mm with mirror surface finishes down to Ra 0.4 µm.
Diameter capability: Full dimensional range handling workpiece outer diameters from 2.5 mm to 200 mm
Single-setup integration: Synchronous turning, threading, radial milling, and cross-hole drilling
Tight dimensional tolerances: Diameter accuracy up to ±0.005 mm with surface finishes down to Ra 0.4 µm
High-Precision CNC Milling for Enclosures, Brackets & Structural Bases
Advanced 3-axis and 4-axis CNC milling of complex prismatic enclosures, heat spreaders, and structural hardware. High-rigidity 3-axis and 4-axis vertical machining centers deliver high-precision milling of sensor enclosures, precision optical mounting plates, and thin-wall heatsinks down to 0.5 mm fin thickness without chatter or thermal deflection. Strict datum parallelism and flatness are verified on calibrated granite inspection plates.
Machining centers: Rigid 3-axis and 4-axis CNC vertical milling units with high-RPM spindle technology
Component portfolio: Sensor housings, mounting brackets, optical baseplates, heatsinks with thin fins
Geometrical precision: Flatness, parallelism, and squareness maintained within 0.01 mm over extended spans
Thin-wall profiling: Precise machining of heat dissipation fins down to 0.5 mm without thermal distortion
Precision Compression, Extension, Torsion Springs & Formed Wire Springs
Custom manufactured mechanical springs and electrical contact wire forms with tight spring-rate calibration. Multi-axis automated CNC spring coilers fabricate precision compression, extension, and torsion springs from wire diameters between 0.15 mm and 6.0 mm. High-tensile music wire SWPB, SUS304-WPB, and beryllium copper alloys undergo stress-relief tempering and shot peening for extended cycle life, backed by 100% digital load-testing.
Wire diameter capability: Precision spring coiling spanning wire sizes from 0.15 mm to 6.0 mm
Configurations: Closed and ground compression springs, loop extension springs, torsion and wire forms
Spring metallurgies: Music wire (SWPB), stainless steel 304/316-WPB, beryllium copper, oil-tempered alloy
Load testing: Automated digital load verification checking free length, load at height, and spring rate
Dedicated precision manufacturing of biocompatible titanium and medical-grade stainless steel hardware. Established in 2020, the specialized Precision Metal & Medical Division utilizes high-pressure coolant machining up to 70 bar to manufacture biocompatible components from Grade 5 (Ti-6Al-4V) and Grade 23 ELI titanium alloys, complete with multi-stage ultrasonic deionized water cleaning and nitric passivation.
Dedicated division: Precision Metal & Medical Division operational since 2020
Medical hardware: Endoscopic sleeves, surgical instrument handles, dental fluid connectors, diagnostic parts
Decontamination: Ultrasonic cleaning cascades in deionized water followed by medical passivation
Electrical Terminals, AC/DC Power Plugs & Audio/Video Cable Connectors
Precision manufacturing of turned pins, stamped spring contacts, and conductive connector housings for power and data. Originating from the 1990 Shenzhen facility, Fonyi Precision manufactures precision turned pins, AC/DC power jacks, audio plugs, and PCB leaf terminals from high-conductivity copper and C3604 brass, finished with selective gold flash up to 5 µm or pure matte tin for stable contact resistance.
Plating options: Selective gold flash or heavy Au (up to 5 µm), silver (Ag), matte/bright tin (Sn)
Electrical performance: Ultra-low contact resistance, high current rating, and dependable mating cycles
Precision Surface Finishing: Anodizing, Electroplating & Chemical Passivation
Integrated chemical and electrochemical surface conversion treatments for superior corrosion resistance and wear durability. Comprehensive in-house surface conversion processes include MIL-A-8625 Type II cosmetic color anodizing, Type III hardcoat anodizing exceeding 400 HV, high-phosphorus electroless nickel plating (ENP) for uniform internal thread protection, trivalent zinc plating, and ASTM A967 stainless passivation.
Aluminum anodizing: MIL-A-8625 Type II cosmetic color anodizing and Type III hardcoat anodizing
Electroless nickel: High-phosphorus ENP providing uniform layer thickness across internal bores and threads
Plating options: Zinc plating with trivalent passivates, black oxide, tin, silver, and gold deposition
Stainless passivation: Acidic passivation according to ASTM A967 protocols ensuring 96h+ salt-spray endurance
Engineering Drawing Evaluation & DFM Optimization
Fonyi Precision technical engineers perform comprehensive design reviews on 2D prints (DWG, PDF) and 3D CAD files (STEP, IGES). During Design for Manufacturing (DFM) assessment, part contours are optimized for progressive die layouts or multi-axis turning setups, verifying metallurgy selection, dimensional tolerances, and surface requirements to minimize unit fabrication costs while maximizing functional reliability.
Fonyi Precision components are deployed worldwide across consumer acoustic electronics, automotive tier-1 assemblies, healthcare medical apparatus, and precision interconnects. With over 20,000 m² of advanced facilities in Huizhou (Mainland China) and Kaohsiung (Taiwan), the enterprise ensures agile production scheduling, dependable supply chains, and rapid manufacturing scalability.
Rigorous Quality Assurance via Keyence Optical Metrology
To guarantee micron-level accuracy, Fonyi Precision inspection laboratories are equipped with advanced Keyence optical and multisensor measurement systems. These metrology stations rapidly scan complex component geometries, verify multi-point tolerances and concentricity within seconds, and generate automated statistical process control (SPC) quality reports for every production batch.
Certified ISO 9001:2015 Management & Global RoHS/REACH Compliance
The manufacturing infrastructure of Fonyi Precision has maintained continuous ISO 9001 certification since February 2001. Raw substrates including copper alloys, stainless steels, aluminum, and plating chemistries undergo rigorous spectroscopic screening, certifying full conformity with international environmental directives including RoHS and REACH regulations.
End-to-End Contract Supply, Commercial Terms & Global Delivery
We deliver complete manufacturing and logistics support for custom Fonyi Precision hardware orders. Transparent commercial contracts, official customs clearance, transit insurance, and reliable ocean/air forwarding ensure dependable on-time delivery. Shipments are accompanied by certified mill test reports, plating thickness certificates, and dimensional CMM inspection records upon request.
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Request Engineering Quotation for FONYI PRECISION Hardware
Submit your engineering drawings (PDF/CAD), material specifications, annual volumes, and surface finishing requirements to receive an official manufacturer quotation detailing tooling investment, unit pricing, and production lead times.
