Contract Manufacturing of
Electronics in China
We integrate resources across the entire electronics manufacturing chain. Shorten development cycles, reduce procurement costs, improve product quality.
Contract Manufacturing Services
Full-cycle electronics manufacturing. Click on a card for details
Electronics Design
Schematic Design · PCB Layout · Simulation
BOM Procurement
5000+ Brands · 15-30% Cost Reduction · Quote in 24h
PCB Fabrication
1-40 Layers · HDI · Heavy Copper · IMS · RF
Stencil Manufacturing
Laser Cut · 0.08mm Aperture · 24h
SMT Assembly
8 Lines · 8M Placements/Day · IPC Class 3
IC Programming
In-System · Serial Numbers · 50K/Day
Harness Manufacturing
100K Terminals/Day · 100+ Connectors · UL
3D Mechanical Processing
CNC ±0.01mm · Sheet Metal · Molding · 3D Printing
Packaging & Logistics
ESD Protection · Cushioning · Worldwide Delivery
Reverse Engineering
PCB Recovery · BOM 99%+ · Import Substitution
Manufacturer Sourcing
500+ Factories · On-Site Audit · Full Support
Failure Analysis & Repair
X-Ray · BGA Rework · 8D Report
Your Trusted Partner in Electronics Manufacturing
Our Clients
Products for Electronics Manufacturing
Popular Items · In Stock · Fast Quote
Printed Circuit Boards
Rigid·FLEX·HDI·Heavy Copper·IMS·RF
Components
ICs·Passives·Diodes·Crystals·Connectors
Modules
WiFi/4G/LoRa·ARM·ESP32·GPS
Cables & Harnesses
Harnesses·RF Coaxial·Ribbon·LAN·Power
Connectors
BTB·WTB·USB·RJ45·HDMI·RF
Enclosures & Mechanics
CNC·Sheet Metal·Casting·Heatsinks
Power Supplies
AC-DC·DC-DC·Chargers·LED Drivers
Stencils & Fixtures
Laser Stencils·Pallets·ICT/FCT
Materials & Consumables
Paste·Flux·Conformal Coating·ESD Packaging
Finished Products
PCBA·Controllers·IoT Gateways·ODM
Real Results, Global Trust
From startups to Fortune 500 — see how we create measurable value for clients
Canadian Drone Manufacturer: Turnkey PCBA + Assembly — Production Scaled from 50 to 2,000 Units/Month
A Vancouver-based company designs and manufactures commercial inspection drones for the energy and infrastructure sectors: power line inspection, pipeline monitoring, and bridge assessment. Their flagship drone combines a 6K thermal imaging camera, AI-powered defect detection, and RTK GPS for centimeter-level positioning. After a successful pilot with two major Canadian utility companies, they received a purchase order for 6,000 units over 12 months. The problem: they had been building everything in-house — 50 units/month with a 3-person assembly team in a Vancouver garage workshop. Their main controller board was a complex 10-layer rigid-flex design with HDI microvias, and their gimbal stabilization board required 0201 passives and 0.4mm pitch BGA. Local Canadian EMS quotes ranged from CAD $420–$580 per board set, with 10–12 week lead times. The BOM alone was CAD $185 at Canadian distributor prices. At those costs, the unit economics would never work for the utility contract. Moreover, three critical components — an Ambarella AI vision processor, a u-blox RTK module, and TDK IMUs — were all in constrained supply through North American distributors, with lead times stretching to 20+ weeks.
German PCB Trader: Direct Asia Sourcing — €280,000/Year Savings
A Stuttgart-based trading company specializes in supplying printed circuit boards to small and medium-sized electronics manufacturers across Germany — from double-sided to 20-layer HDI boards. Annual procurement volume: approximately €1,200,000. For the past five years, they worked with three German manufacturers: fast prototypes (2–4 layers, €320–€580/m²), medium batches (4–12 layers, €180–€420/m²), high-layer-count boards (12–20 layers, €520–€1,200/m²). However, in 2024, local capacity continued to shrink: their key supplier in Nuremberg shut down its 6–12 layer line, and another, following an acquisition, raised prices by 35%. Worse still — lead times kept growing: an 8-layer prototype board went from 7 working days to 18, and series production from 15 days to 35. The trader's customers — German equipment manufacturers — could not accept such timelines. Three major clients had already left for competitors. The trader tried working with Chinese factories directly but hit three barriers: (1) language — 5 emails to 3 factories, one replied, and that reply was an unreadable mix of Chinese and English; (2) quality distrust — German customers are historically skeptical of "Made in China," and the trader themselves couldn't assess which factory was genuinely reliable; (3) logistics and customs — unfamiliarity with DDP procedures into Germany, fear of cargo getting stuck at Frankfurt customs.
American IoT Startup: BOM Optimization Turned a Money-Losing Product Into a Profitable One
An Austin-based startup (8 people in a WeWork) developed a wireless sensor gateway for commercial building energy management: three radio modems (LoRaWAN, WiFi 6, Zigbee) and an AI chip for local data processing. Eight hand-built prototypes performed excellently at the pilot site. The customer — a commercial real estate management company — issued a letter of intent for 5,000 units. But when the startup crunched the series economics, reality hit hard: BOM was $187/unit against a target retail price of $249. After accounting for channel margin, logistics, and operating expenses — a $45 loss on every device sold. Three main culprits: WiFi 6 SoC from Silicon Labs ($12.80/unit at Mouser), Edge AI processor from NXP ($38.50/unit at DigiKey), precision MEMS pressure sensor from TDK ($8.20/unit at Arrow). Buying at retail prices for prototypes — fine. But at 5,000 units, no discounts were available. Moreover, all three chips were in varying degrees of shortage at authorized distributors. The standard lead time for the NXP AI processor was 26 weeks. No one on the team understood BOM optimization: the hardware engineer selected components based solely on technical specs without analyzing competitive alternatives. At least 15% of BOM line items had cheaper equivalent substitutes. Worse — the startup had zero contacts with Asian component suppliers. They had heard about Shenzhen's Huaqiangbei channels but were afraid: on one hand, "everything is there and cheap," on the other — the fear of receiving refurbished or counterfeit chips and ruining the entire batch.
Didn't Find What You Need?
Custom manufacturing from drawings and samples, BOM procurement, manufacturer sourcing. Payment in RUB, USD, EUR. Submit a request — we'll find a solution within 24 hours.
Contract Electronics Manufacturing — Frequently Asked Questions
What is contract electronics manufacturing (EMS)?
Contract electronics manufacturing (also called EMS — Electronics Manufacturing Services) is when you outsource the production of your electronic products to a specialized manufacturer. qiuems provides full turnkey EMS: we handle PCB fabrication, electronic component sourcing (BOM procurement), SMT assembly, through-hole soldering, box-build assembly, testing, and global logistics — so you receive finished, tested products ready for your customers.
How fast can you produce PCB prototypes?
Standard 2-4 layer prototypes ship within 24 hours. 6-8 layer prototypes within 48 hours. All prototypes are fabricated on the same production lines and to the same IPC-A-610 Class 3 quality standards as volume production. We also provide free DFM (Design for Manufacturability) analysis on every Gerber file before production begins.
Can you help reduce our electronic component costs?
Yes — this is one of our core strengths. Our AI-powered BOM engine scans your bill of materials and identifies cost-reduction opportunities: alternative pin-compatible components, APAC-region sourcing at lower prices, and group purchasing for passive components. Our clients typically see 15-30% BOM cost reduction. We source from 5000+ brands across 1M+ SKUs.
Where do you ship to? Do you handle customs?
We ship worldwide via FedEx, DHL, and UPS. We serve clients in the United States, Canada, United Kingdom, Germany, France, Italy, Australia, India, and across Asia-Pacific. We provide complete customs documentation packages including certificates of origin, packing lists, and commercial invoices. DDP (Delivered Duty Paid) shipping is available.
What quality certifications do your factories hold?
Our partner factories hold IATF 16949 (automotive), ISO 9001, ISO 13485 (medical devices), ISO 14001, AS9100D (aerospace), and UL/CE certifications. All SMT assembly follows IPC-A-610 Class 3 acceptance criteria with 100% AOI, SPI, X-Ray, ICT, and FCT inspection coverage.
How small can your minimum order quantity be?
We have no minimum order quantity. Whether you need 5 prototype boards or 50,000 volume units, we provide the same engineering rigor, DFM analysis, and quality inspection. Low-volume pricing is competitive because we aggregate orders across our client base for component purchasing leverage.
What makes qiuems different from other China-based EMS providers?
Three things: (1) Engineering depth — our 20+ engineers provide DFM analysis, BOM optimization, and design review before production, not just "build to print." (2) Supply chain transparency — every component batch has full traceability, every PCB comes with test data. (3) Single point of accountability — one dedicated project manager handles your entire production chain from PCB to box-build, so you never have to coordinate between multiple vendors.