01
Legal identity
Business license, registration number and full registered address of Shenzhen Kingring Technology Co., Ltd., shared in the company profile pack under NDA.
MANUFACTURER PROFILE
The manufacturer behind CYNRIN smart glasses
Shenzhen Kingring Technology Co., Ltd. manufactures the CYNRIN platform and customer-brand smart eyewear at one owned site in Longgang, Shenzhen. This page states exactly what is built in-house, what is partner-supported, and what evidence you receive for each claim.
DIRECT ANSWER
Manufacturer, brand and trading status
The manufacturer of record is Shenzhen Kingring Technology Co., Ltd., a Chinese limited company founded in 2018 and based in Longgang, Shenzhen. CYNRIN is its smart-glasses manufacturing brand and the name on product platforms, this website and sales communications.
We are a manufacturer, not a trading company: product engineering, surface-mount assembly, product assembly, aging, quality verification and packing are executed at our own 20,000 m² site. Specialized inputs — injection molding, optical lens production, certification testing and some logistics steps — are delivered by qualified, audited partners and disclosed as such. We do not re-label other factories’ products.
Contracts, invoices and declarations are issued by Shenzhen Kingring Technology Co., Ltd. The registration number and full registered address are provided in the company profile pack under NDA.
OEMbranded productionODMplatform developmentIn-house SMT → packingSingle accountable entity
MANUFACTURER FACTS
What procurement systems ask for
The manufacturer identity fields used in vendor master files, supplier questionnaires and certification declarations.
| Field | Value |
|---|---|
| Manufacturer legal name | Shenzhen Kingring Technology Co., Ltd. |
| Brand / trade name | CYNRIN |
| Manufacturer role | Original equipment manufacturer (OEM) and original design manufacturer (ODM) of smart glasses |
| Founded | 2018 |
| Manufacturing location | Longgang District, Shenzhen, Guangdong, China (single owned site) |
| Facility | 20,000 m², co-located R&D and manufacturing |
| Headcount | 300+ employees; 50+ R&D / engineering professionals |
| Product scope | Smart audio glasses, camera glasses, sport & cycling smart eyewear; reference platforms V03-T5, E13, K01 |
| Export markets | 40+ countries across the EU, North America, the Middle East and APAC |
| Manufacturer declaration | Issued under the legal entity; registration details provided under NDA |
CAPABILITY MATRIX
In-house vs. partner-supported, stated plainly
The most common supplier-deception pattern in this industry is claiming every process as “in-house.” Here is the honest matrix. Partner-supported does not mean unmanaged: each partner is qualified, inspected and covered by incoming-material controls.
| Capability | Where it happens | What you can verify |
|---|---|---|
| Product / electronics engineering (EE, firmware, optics, ID) | In-house — R&D labs at the Shenzhen site | Lab tour, engineer introductions, EVT/DVT documentation |
| SMT / surface-mount assembly | In-house — automated SMT lines | Line walk-through, AOI records, reel traceability |
| Product assembly (electronics, frames, temples) | In-house — controlled assembly stages | Workstation audit, process routing sheets |
| Functional, optical, RF and acoustic testing | In-house — optical benches, shielded RF room, acoustic fixtures | Equipment demonstration, test reports per batch |
| Aging / burn-in and reliability testing | In-house — aging racks and environmental tests | Aging logs, reliability test plans |
| IQC / IPQC / OQC quality inspection | In-house — quality organization at the site | AQL plans, inspection records, defect data |
| Packing and finished-goods handling | In-house — packing lines and bonded-ready warehouse | Packing audit, carton marking, FAI samples |
| Injection molding of frames | Partner-supported | Partner qualification, mold ownership terms, first-article inspection |
| Tooling / mold making | Partner-supported | Tooling contract and maintenance records available |
| Optical lens blank production | Partner-supported | Lens supplier specifications and incoming-inspection data |
| Certification laboratory testing | Partner-supported — accredited third-party laboratories | Test reports from accredited labs; see certifications page |
| Export freight & customs handling | Partner-supported — licensed forwarders | Incoterms, forwarder contacts, shipping documents |
Process detail and production workflow continue on Manufacturing Operations; inspection methods are documented on Quality Control.
EVIDENCE CHAIN
Every claim maps to a document or a site visit
We follow a claim → entity → evidence rule. Nothing on this site asks you to trust a capability without a way to check it.
02
Physical facility
On-site audit or live video walk-through of the Longgang facility, including SMT, assembly, labs, aging room and warehouse.
03
Quality system
IQC/IPQC/OQC procedures, AQL inspection records, control plans and reliability test reports issued against your product configuration.
04
Product compliance
CE-RED, FCC, RoHS, REACH, UKCA and UN38.3 test reports from accredited laboratories, delivered in the certification scope for your SKU.
05
Manufacturing origin
Process routing, material traceability and shipping documents showing goods produced at the Shenzhen site.
06
People and accountability
Named program owner and quality contact introduced before tooling kick-off; leadership backgrounds available on request.
QUALITY & COMPLIANCE
Verification is part of manufacturing
Production runs under staged quality gates: incoming-material control (IQC), in-process checks (IPQC) and outgoing inspection (OQC) against agreed AQL levels, plus functional, mechanical, environmental and aging verification selected for the product configuration.
Market-access support covers CE-RED, FCC, RoHS, REACH, UKCA and UN38.3. Reports are issued by accredited third-party laboratories for the exact configuration sold; certificates are typically held in the customer’s brand name, so copies are released under NDA as part of the program file.
- Six owned stages: SMT → assembly → verification → aging → final inspection → packing
- Project-specific test documentation, not generic “factory certified” claims
- 12-month warranty programs administered against serialised production
HOW BRANDS ENGAGE
From RFQ to repeat order
The commercial path is the same whether you buy standard OEM platforms or develop an ODM product; evidence and documentation depth grow with the scope.
Brief & feasibility
Share target product, market, quantities and certification needs. Engineering reviews feasibility and responds with a documented scope.
Sample & validation
Reference or engineered samples with spec sheets; EVT/DVT/PVT gates for customized and ODM programs.
Pilot & tooling
Pilot build, first-article inspection, packaging approval and compliance testing against the approved configuration.
Mass production
Controlled production with IQC/IPQC/OQC records, OQC release and reorder continuity under one program owner.
BUYER DUE DILIGENCE
Answers to the questions your compliance team asks
Are you the actual manufacturer or a trading company?
The actual manufacturer. Shenzhen Kingring Technology Co., Ltd. owns and operates the Longgang, Shenzhen site where engineering, SMT, assembly, aging, inspection and packing take place. You can audit it on site or by live video. Specialized partner processes are disclosed in the capability matrix above.
What is the legal manufacturer name on contracts and certificates?
Shenzhen Kingring Technology Co., Ltd. CYNRIN is the brand/trade name. Contracts, invoices and declarations carry the legal entity; registration details are provided under NDA.
When was the manufacturer founded and how many people work there?
Founded in 2018. The site employs 300+ people, including 50+ R&D and engineering professionals. Current headcount is confirmed during vendor onboarding.
Do you own injection molding and lens production?
No, and we do not claim to. Injection molding, mold making and lens blank production are partner-supported by qualified suppliers, with incoming inspection and first-article controls at our site. SMT through packing is in-house.
Can we visit and audit the factory before ordering?
Yes. Qualified buyers are welcome on site in Longgang, Shenzhen, or can join a live video walk-through. Contact [email protected] to schedule; audit questionnaires are answered in writing beforehand.
What evidence do we receive for compliance and quality?
Accredited-laboratory test reports for your exact configuration (CE-RED, FCC, RoHS, REACH, UKCA, UN38.3 as applicable), IQC/IPQC/OQC records, AQL inspection results and reliability reports. Brand-held certificates are released under NDA.
Can you supply business license and registration documents?
Yes, as part of the company profile pack shared with qualified customers during vendor onboarding, typically under NDA. Request it from [email protected] or via the company profile page.
Who is accountable if something goes wrong?
A named program owner and quality contact are assigned before tooling kick-off, backed by a 12-month warranty program and documented after-sales process — not a generic sales address.
VERIFY FURTHER
Related manufacturer pages
01
Shenzhen Factory
Facility entity, lines, equipment and capacity basis.
Explore02Manufacturing Operations
Process flow, assembly stages and production workflow.
Explore03Quality Control & Testing
IQC, IPQC, OQC, AQL, aging and reliability methods.
Explore04Certifications & Compliance
Certification scope, evidence rules and market coverage.
Explore05Company Profile Pack
Registration documents and vendor-onboarding evidence.
ExploreConfirm the manufacturer yourself
Send your vendor questionnaire or book a factory walk-through — the fastest way to validate what this page claims.