Custom Manufacturing & Product Development in China
From technical CAD drawings and customized tooling to turnkey ODM product modification, Tommysourcing bridges overseas engineering teams with 2,000+ audited manufacturers across the Yangtze River Delta.
Tailored Solutions for Different Development Stages
Whether you have a finalized blueprint ready for mass tooling or want to customize existing proven models with private labels and specialized features, we provide full on-the-ground support.
Original Equipment Manufacturing (OEM)
Manufacture products strictly according to your engineering drawings, technical specifications, CAD models, and BOM. We handle mold fabrication, raw material testing, factory auditing, and tight tolerance quality control.
Capabilities Included:
- ✔ Design for Manufacturability (DFM) analysis to reduce scrap and cost
- ✔ Dedicated injection molding, metal stamping, casting, and CNC tooling
- ✔ Material certificate validation (RoHS, REACH, UL, CE, ISO standard)
- ✔ Exclusive tooling ownership and comprehensive IP confidentiality agreements
Original Design Manufacturing (ODM)
Fast-track your time-to-market by leveraging existing validated factory platforms. We modify exterior enclosures, enhance electronic/mechanical functionality, apply custom branding, and engineer retail-ready packaging.
Capabilities Included:
- ✔ Access to 2,000+ proven tooling designs ready for modification
- ✔ Custom color matching (Pantone), laser engraving, and silk-screen branding
- ✔ Retail packaging design, user manuals, barcodes, and Amazon FBA labeling
- ✔ Significantly lower upfront tooling costs and rapid prototype turnaround
7-Step OEM/ODM Manufacturing Process
A structured, milestone-driven protocol designed to safeguard intellectual property, avoid costly engineering revisions, and deliver reliable mass production.
NDA & Specification Brief
We execute a China-enforceable NNN/NDA agreement, analyze technical requirements, 2D/3D CAD files, and target unit economics.
DFM & Factory Matching
Our engineering team conducts DFM analysis (draft angles, wall thickness, tolerances) and matches the 2-3 best specialized tier-1 factories.
Prototyping & Tooling
Creation of functional prototypes via CNC machining or 3D printing, followed by precision mold fabrication (steel/aluminum tooling).
Sample Sign-Off
Delivery of "Golden Samples" to your engineering team for dimensional verification, functional load tests, and formal sign-off.
Pilot Run & Pilot QC
A pilot batch (e.g., 200-500 pcs) is manufactured to validate assembly jigs, operator repeatability, and continuous line yield.
Mass Production & In-Line QC
Full-scale manufacturing overseen by Tommysourcing inspectors on-site for incoming raw materials, in-process check, and 100% final testing.
Custom Packaging, Consolidation & Global DDP
Assembly of multi-supplier components into branded retail boxes, palletization with anti-rust/moisture wrapping, and direct door-to-door (DDP) shipping to your warehouse or distribution centers.
Industries & Process Capabilities
Tommysourcing manages cross-disciplinary manufacturing clusters in Jiangsu, Zhejiang, Shanghai, and Guangdong.
| Category | Manufacturing Processes | Materials Supported | Typical Applications |
|---|---|---|---|
| Hardware & Tools | CNC Turning/Milling, Stamping, Laser Cutting, Die Casting, Surface Plating & Powder Coating | Carbon Steel, SS304/SS316, Brass, Aluminum 6061/7075 | Brackets, Hand Tools, Channel Nuts, Pipe Clamps, Fasteners |
| Machinery & Components | Investment Casting, Sand Casting, Forging, Heat Treatment, Gear Hobbing & Precision Grinding | Cast Iron, Ductile Iron, Alloy Steel, Bronze | Pumps, Valves, Hydraulic Fittings, Industrial Reducers |
| Plastic & Rubber Parts | Plastic Injection Molding, Overmolding, Rubber Compression, Blow Molding, Rotomolding | ABS, PC, POM, PA66 (Nylon), TPU, Silicone, EPDM | Enclosures, Protective Caps, Grommets, Gaskets, Consumer Shells |
| Building & Infrastructure | Roll Forming, Hot-Dip Galvanizing (HDG), Robotic Welding, Structural Bending | Q235, Q355, Pre-galvanized Coil, High-tensile Steel | Strut Channels, Cable Trays, Pipe Supports, Solar Mounts |
| Consumer & Electrical | SMT Assembly, Wire Harness Fabrication, Ultrasonic Welding, Private Label Packaging | FR4, Copper, ABS/PC V0 Fire-retardant, Eco-packaging | Small Appliances, Power Adapters, IoT Enclosures, Pet Tech |
Overcoming the Core Risks of Custom Manufacturing
Custom OEM/ODM projects in China fail when there is poor engineering communication, lack of on-site oversight, or vague quality criteria. We eliminate these risks directly at the source.
IP & Mold Ownership Protection
We sign formal bilingual Non-Disclosure, Non-Use, and Non-Circumvention (NNN) contracts. You retain 100% legal ownership of your tooling, molds, and CAD design assets.
Bilingual Engineering Communication
Our project managers in Suzhou possess mechanical engineering backgrounds. We translate tolerances, GD&T symbols, and critical-to-quality (CTQ) specifications without misinterpretation.
Strict On-Site Quality Verification
We do not rely on factory self-reporting. Our QC engineers inspect raw material certificates, perform CMM dimensional checks, coating thickness tests, and drop tests before authorizing shipment.