Custom Parts Factory · China Synergy Manufacturing Group
Engineering-led sourcing for parts-level and product-level manufacturing — with English-speaking engineers, factory qualification, and end-to-end project management.
We are especially strong for three types of new product development: projects that require new molds (plastic injection or metal casting), projects where IP protection matters, and projects where you outsource mechanical or structural parts while keeping electrical cores elsewhere.
Over the years we have custom manufactured for companies such as GE, Tyco, and Electrolux. Clear communication is vital for custom manufacturing — our English-speaking engineers analyze your drawing specs and quote for you.
From electrical or mechanical assembly and packaging to full product builds, we manage the complete manufacturing workflow with consistent communication and quality control.
Simple changes such as colors, voltage, and enclosure shapes based on existing products — ideal when you need a proven platform with targeted modifications.
We can create engineering drawings from samples you provide, then move into quoting, sampling, and production with qualified factories.
Our engineers give valuable suggestions to make your design suitable for mass production, including DFM feedback, tooling strategy, and process selection.
If you want full control of your China supply chain, we help set up dedicated lines, recurring production, and long-term factory relationships.
Help you find and go straight to the manufacturers
Obtain detailed quotes from 4–6 factories
Sampling and production with your chosen factory
Drive on-time delivery, resolve issues, and provide constant communication
Quality inspection before shipment
Shipping to door — including FBA warehouses or drop ship
Other products we have helped create include:
Email [email protected] to discuss your project.
The company's management team all have engineering backgrounds.
Manufacturing engineers expert in casting, forging, molding, machining, welding, fabrication, and surface finishing.
Process control, traceability, TQM, SPC, 5D/8D analysis, and lab testing.
We design and build robotic production lines to cut labor cost and improve quality consistency for large orders.
International shipping consolidation, VMI, EDI, RFID, and demand-pull inventory management with warehouse near you.
Compared to U.S. factories, costs are typically 40–60% lower. Compared to other Chinese exporters, we offer strong service, quality, and overall value.
We pre-qualify suppliers with onsite visits, monitor production constantly, and inspect quality before shipment.
English-speaking team familiar with foreign engineering standards and fast in communication — avoid the headache of coordinating many factories yourself.
You are welcome to visit actual manufacturers and discuss requirements with them directly when needed.
Many capable factories do not market to new foreign customers or lack English websites. Our existing relationships reduce the risk of trying new suppliers.
We manage customs clearance and shipping, including FBA warehouses and drop-ship programs.
A cross-functional team supports every sourcing project from quotation through production, inspection, and delivery.
30 staff
Solve production problems especially during ramp-up.
20 staff
Timely communication and professional customer service.
10 staff
PO processing, ERP support, international shipping & logistics.
30 staff in Shanghai, Ningbo, and Shenzhen
Audit factories and check quality onsite and before shipment.
10 staff
Basic and technical translations of specs and drawings.
10 staff
Dedicated team calling factories to get price and verify basic information.
5 staff
For setup of complex supply chains.
Custom Parts Factory is a subsidiary of China Synergy Manufacturing Group. Upload your drawings for an instant quote, or contact our engineering team directly.