Yijin Solution Customer Reviews
Six customer programs, documented with the tolerances, yields and lead times we recorded at the time.
Three review profiles we do not control, including the ratings that are not five stars. Every figure on this page traces back to a published case study or a third-party listing.
Three profiles, hosted by someone else
We cannot edit, reorder or delete anything on these listings. Trustpilot verifies each reviewer and publishes every rating it receives. Clutch interviews the client directly.
Both numbers are shown here as they stood on 8 September 2026.
A small sample, honestly reported. We would rather show 13 verified reviews than a rounded-up number we generated ourselves.
Read all 13 on TrustpilotOne review, and Clutch obtained it by interviewing the client directly rather than sending out a form.
Read the Clutch interviewCustomer feedback published on Google.
Rating checked 10 September 2026.
Read Google reviews →“We’ve been working with Yijin Hardware for over a year now. Their support throughout our custom CNC machining project has been fantastic, and delivery is always on time.”
“The team at Yijin Hardware was great to work with. They offered free industrial design help, gave useful suggestions, and delivered everything on time.”
“Their ability to optimize designs, maintain ultra-precise tolerances, and deliver consistent quality sets them apart.”
Thirteen reviews. Ninety-two per cent five star. One one-star, from June 2026, still visible on our listing with our reply underneath it.
Any supplier can show you a wall of five-star quotes. What tells you more is whether the bad one is still there, and what happened next. Read the listing unfiltered and judge it yourself.
Read all 13 reviews on TrustpilotWhat the parts actually measured
A review tells you how a supplier behaved. These tell you what came off the machine.
Each program lists the figures recorded at the time, the instrument that recorded them, and a link to the full documentation.
Showing all six programs
Galvanised and black-painted core components, 6061 and 5052 aluminium
- First-pass yield75%→99%
- Defect rate25%→<1%
- Vorlaufzeit20 d→15 d
- Cycle time per part8.0 h→5.5 h
- Raw material utilisation70%→88%
- Salt spray endurance480 h required 300 h
- Max dimensional deviation0.03 mm tol. ±0.05
Measured by CMM, cross-cut adhesion to ASTM D3359 at grade 5B, plus salt spray and RoHS testing. First article, two-hourly sampling, 100% final inspection.
Read the full case studyWheel hub flange, 5-axis machined, 316 stainless steel
- Yield72%→99.8%
- Rework rate28%→0%
- Vorlaufzeit16 d→12.8 d
- Manufacturing cost−10%
- Centre hole coaxiality0.004 mm avg
- Flange face flatness≤ 0.002 mm
- Critical dimensional error±0.003 to 0.005 mm
Measured on a Zeiss CONTURA CMM accurate to ±0.001 mm, with in-process Renishaw OMP40 probing, inspected to ISO 2768-2.
Read the full case studyPrecision electrode holders, 7075-T6 aluminium, DLC coated
- Tolerance held±0,001 mm
- Defect rate8%→0.3%
- Delivery cycle2.4 weeks
- Customer etching capacity+30%
One micron on a coated aerospace-grade alloy. Verified on a Zeiss-KMG against the customer’s drawing datums before release.
Read the full case studyCoaxial dual-rotor UAV motor mount, full GD&T and datum review
- Yield80%→99.8%
- Kritische Dimensionenwithin ±0.005 mm
- Delivery time−20%
- CMM inspection coverage100% of parts
The yield gain came from a GD&T and datum review before cutting, not from tightening the process afterwards.
Read the full case studyClient not named. Stainless liner, PA outer shell, prototype to tooling
- Batch qualification rate99.5%
- External surface, post burn≤ 70 °C
- Internal fire resistance> 1000 °C
- Prototype to moulded deviation±0.15 mm
- Development cycle−30%
Tested by 300 Wh lithium cell combustion, water immersion sealing, and six moulding parameter iterations.
Read the full case studyClient not named. Titanium and aluminium, harmonic drives and actuators
- Machining tolerance±0,02 mm
- Harmonic drive ratios30:1 to 160:1
- Rotary actuator torque20 / 110 / 180 Nm
- Linear actuator force500 / 3,900 / 8,000 N
Joint accuracy has to hold across tens of thousands of operating hours. Component tolerance is specified against assembled joint accuracy, not the part print alone.
Read the full case studyThe numbers above came off these
A tolerance claim is only worth what measured it.
This is the metrology behind every figure on this page, and the paperwork that ships in the box with your parts.
281 inspection instruments
Including Zeiss coordinate measuring machines. A Zeiss CONTURA measures to 0.001 mm, an order of magnitude tighter than the tightest tolerance we quote.
Renishaw OMP40 in-process probing
Probing on the machine between operations. A drifting dimension is caught during the cut, not at final inspection once the batch is made.
FAI and PPAP Level 3 documentation
First Article Inspection and Production Part Approval Process Level 3 paperwork travels with your parts. Results to ISO 2768 unless your drawing says otherwise.
Certified, not self-declared
Each standard below was issued by a third-party registrar after an on-site audit, and each is re-audited on a cycle.
Ask us for the certificate PDF before you place a first order. A supplier who cannot produce one on request does not hold it.
| Standard | What it authorises | Registrar | Certificate no. | Valid to |
|---|---|---|---|---|
| AS9100D | Aerospace and defence production quality management | On request | On request | On request |
| IATF 16949 | Automotive production and relevant service parts | On request | On request | On request |
| ISO 13485 | Medical device manufacture | On request | On request | On request |
| ISO 9001 | General quality management system | On request | On request | On request |
| ISO 14001 | Environmental management system | On request | On request | On request |
Registrar, certificate number and expiry are sent with the certificate PDF on request, before a first order. Ask us, and ask every other supplier you are quoting.
Six questions worth asking any supplier in China
Ask us, and ask whoever else you are quoting.
The answers separate a factory from a trading company faster than any reviews page will. Ours are below.
We own the plant in Shenzhen and have run it since 2003. No broker sits in the middle, so we can tell you which machine cut your part.
Yes. The NDA is signed before any drawing is opened or reviewed, not after quoting.
FAI and PPAP Level 3 as standard. If your programme needs a different format, say so at quote stage and it is built into the price.
281 instruments including Zeiss CMMs. A Zeiss CONTURA resolves to 0.001 mm, and in-process Renishaw probing catches drift mid-cut.
AS9100D, IATF 16949, ISO 13485, ISO 9001 and ISO 14001. Certificates are available on request before a first order.
Trustpilot, Clutch and the Google listing for the physical factory address. All three are linked at the top of this page.
Upload a STEP or IGES file and get a DFM review with the quote, in writing, before you commit to anything.
Every figure on this page comes from a published Yijin Solution case study or a third-party review listing, both linked at the point of the claim. Review scores shown as at 8 September 2026. Trustpilot and Clutch list us under the earlier trading name Yijin Hardware, which became Yijin Solution.
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