Inside the Factory: 5,000+ m², 8 SMT Lines
Four production areas, an equipment list you can check line by line, and photographs of the plant as it runs — so you can verify what exists before you fly.
Youwang operates a 5,000 m² three-storey manufacturing plant in Shenzhen, China. It contains 17 injection moulding machines and 15 surface-treatment units, 8 fully automatic SMT lines built on 7 Yamaha YSM20R placers and a Siemens HS60 line (0201 and BGA capability, verified by 5 AOI, 3 SPI and 1 X-ray machine), a bonding line with 6 AB530 bonders, and 4 finished-product assembly lines supported by more than 50 pieces of test equipment. Annual output exceeds 600,000 units, and the plant is open to customer audits.
What sits in each part of the building
Layout matters commercially: when moulding, electronics, assembly and packing share one campus, a design change reaches the line in the same week instead of crossing a supplier boundary.
Plant Overview
Three-storey independent plant in Bao'an District, Shenzhen, housing injection moulding, SMT, assembly and export staging under one roof.
The 5,000+ m² plant keeps the four stages of an appliance order — plastic parts, electronics, assembly and packing — on one site, which shortens the feedback loop when a design change lands mid-production. More than 200 staff work across the lines, and annual output exceeds 600,000 units.
SMT Workshop
8 fully automatic SMT lines with Yamaha YSM20R and Siemens HS60 placement, covering 0201 and BGA work, verified by AOI, SPI and X-ray.
Boards are built where the appliances are assembled, so a firmware or layout change reaches the line the same week. 5 AOI machines and 3 SPI units check every board; the 1 X-ray machine covers BGA joints that optics cannot see. 6 AB530 bonders and a die bonder support COB work on cost-driven boards.
Moulding & Finishing
17 injection moulding machines produce ABS, PP and PC housings and tanks in-house; 15 surface-treatment units handle finishing and printing.
In-house moulding is why private-label colour changes carry no tooling surcharge and start at the platform MOQ. Water tanks for the fountains and dust boxes for the vacuums are moulded on the same floor as assembly, so a tank revision is measured against the gasket it mates with, not against a courier sample.
Assembly & Packing
4 finished-product assembly lines with 50+ pieces of test equipment, running per-unit functional checks and export packing to customer artwork.
Every unit passes suction or torque measurement, sensor calibration, charge-cycle verification and pairing checks before packing; water platforms add a leak and cross-flow test. Carton formats and container loading quantities are documented per model, from 2 robots per carton to 36 scrubbers.
Lines, placement and inspection
Model numbers are listed because buyers check them. If a specific machine or line configuration matters to your programme, confirm it during the quotation.
| Model | Type | Qty | Capability | Used for |
|---|---|---|---|---|
| Yamaha YSM20R | High-speed SMT placer | 7 | High-speed placement, 0201 capable | Backbone of the 8 SMT lines; supports 0201 passives and BGA packages. |
| Siemens HS60 | Fully automatic SMT line | 1 | Automatic high-speed placement | Runs alongside the Yamaha lines on dense control boards. |
| AOI (automated optical inspection) | Post-reflow inspection | 5 | Camera-based defect detection | Every SMT line output passes AOI. |
| SPI (solder paste inspection) | Pre-reflow inspection | 3 | Paste volume and alignment measurement | Catches paste defects before the reflow oven. |
| X-ray inspection | Hidden-joint inspection | 1 | BGA and QFN joint verification | Covers joints that optical inspection cannot see. |
| AB530 bonder | High-speed wire bonder | 6 | High-speed automatic bonding | Supports chip-on-board assembly on cost-driven boards. |
| Injection moulding machines | Thermoplastic injection | 17 | Housing and tank production | In-house moulding for housings, tanks and dust boxes. |
| Surface treatment units | Finishing and printing | 15 | Cosmetic finishing | Logo printing and finishing for private-label housings. |
| Assembly lines | Finished-product assembly | 4 | Per-unit functional testing | Supported by 50+ pieces of test equipment. |
Equipment list current as of 2026. Cell and component suppliers are named in the bill of materials per order, with lot traceability.
The floor, as it runs
Come and look at it
A factory page is a claim; an audit is evidence. We schedule customer visits to walk the full route your product takes — moulding, SMT, assembly, end-of-line test and packing. Remote video audits are available where travel is impractical.
- On-site audits scheduled within two weeks, including customer-specific checklists
- Remote video audit with live line and test-station walkthroughs
- Records available on site: line-test data, compliance files, battery transport documents
- NDA signed before any customer-specific artwork or product is shown during a tour
Send drawings, get a quote in 24 hours
Upload a STEP file and a drawing. You will receive a fixed-price quotation with lead time and a written DFM report — no obligation, and no sales call unless you ask for one.