1 · Legal identity
Business license, company registration number, full registered address, legal representative record and the legal-name-to-brand relationship statement.
COMPANY PROFILE PACK
The vendor-file facts on CYNRIN — and the documents behind them
Procurement and compliance teams need verifiable company information in a consistent format. This page publishes the facts safe to publish, and defines the company profile pack we provide to qualified buyers under NDA: business license, registration details, facility evidence, certification scope and management contacts.
PUBLIC COMPANY FACTS
Safe to cite in your supplier file
These facts are consistent across contracts, invoices, this website and the company profile pack. Verify them directly; anything deeper is provided under NDA below.
| Item | Detail |
|---|---|
| Legal entity name | Shenzhen Kingring Technology Co., Ltd. |
| Brand / trade name | CYNRIN (smart-glasses manufacturing brand of the legal entity) |
| Year founded | 2018 |
| Company type / role | OEM / ODM smart-glasses manufacturer — engineering plus in-house assembly |
| Headquarters & factory | Longgang District, Shenzhen, Guangdong, China (one co-located site) |
| Facility | 20,000 m² |
| Employees | 300+ total · 50+ R&D / engineering professionals |
| Product scope | Smart audio glasses, camera glasses, sport & cycling smart eyewear; platforms V03-T5, E13, K01 |
| Markets | 40+ countries — EU, North America, Middle East, APAC |
| In-house scope | R&D, SMT, assembly, functional/optical/RF/acoustic testing, aging, OQC, packing |
| Partner-supported scope | Injection molding, mold making, lens blanks, accredited certification testing, export freight (disclosed) |
| Quality approach | IQC / IPQC / OQC with AQL inspection, aging and reliability programs |
| Compliance support | CE-RED, FCC, RoHS, REACH, UKCA, UN38.3 (per configuration; accredited lab reports) |
| Warranty | 12-month warranty programs against serialised production |
| Sales contact | [email protected] · English |
THE PROFILE PACK
Documents provided to qualified buyers under NDA
The pack is assembled per program (documents are dated and current), typically exchanged after mutual NDA during vendor onboarding.
2 · Facility evidence
Facility datasheet with floor area, line/equipment list, floor plan, shift structure and current, dated factory photographs; live walk-through scheduling.
3 · Banking & contracts
Beneficiary details for the legal entity, contract templates, proforma invoice format and signature/company-seal process to protect against payment fraud.
4 · Quality system
IQC/IPQC/OQC procedures, AQL inspection policy, control plan, sample inspection records and corrective-action (8D) process.
5 · Certification scope
Accredited-laboratory test reports for the relevant configuration and the process for certificates held in the customer’s brand name.
6 · People
Named program owner, quality contact and leadership introductions, with management CVs available on request for strategic accounts.
Mutual NDAstandard routeDated & currentno stale boilerplateIn Englishwith originals available
NOT PUBLISHED ON THE WEBSITE
And the honest reason why
We disclose the gaps rather than hiding them. If your onboarding requires one of these, the pack route is the path.
| Item | Why it is not public | How to obtain it |
|---|---|---|
| Company registration number | A precise legal identifier; published selectively to limit misuse | Profile pack under NDA |
| Full registered street address | Provided with contracts, visit logistics and vendor files | Profile pack / factory visit invitation |
| Business license scan | Identity document of the legal entity | Profile pack under NDA |
| Bank account details | Never sent over unsecured channels; fraud-sensitive | Through the NDA contract process only |
| Customer names & case evidence | Customer confidentiality and brand-protection agreements | Sanitised references on request; direct introductions with permission |
| Brand-held certificates | Certificates are typically held in the buyer’s brand name | Relevant reports under NDA per program |
| Dated staff list & salaries | Personal-data protection | Key-contact names only, with consent |
| Exact capacity by month | Configuration- and load-dependent, quickly stale | Per-RFQ capacity statement in writing |
HOW TO REQUEST
Three steps, no long forms
The pack is sent by humans who read your project context and tailor the documents to it.
1 · Send the request
Email [email protected] with your company, brand, target product and the documents your onboarding requires. Use the prepared email link below.
2 · Mutual NDA
We exchange a mutual NDA (yours or ours, redlined quickly). Most requests are answered within two working days.
3 · Receive & verify
You receive the dated pack in English, plus an optional live factory walk-through and Q&A with the relevant engineering or quality lead.
VENDOR QUESTIONNAIRES
We fill yours in — in writing
If your organization runs a standard supplier questionnaire (ISO-style quality, ESG, security, financial or customs/AEO forms), send the file. The relevant leadership function answers each section rather than returning generic marketing text.
Typical turnaround is a few working days for standard questionnaires; sections requiring current production data are answered against the most recent period and dated accordingly. Questions we cannot evidence are marked as such rather than guessed.
- Quality and manufacturing questionnaires
- Compliance, RoHS/REACH material declarations
- Security and code-of-conduct questionnaires
- Customs and trade documentation forms
PROFILE PACK FAQ
Documents, NDAs and verification
Is there a downloadable company profile PDF?
A dated, program-specific PDF is included in the company profile pack sent to qualified buyers under NDA. We do not gate a generic marketing brochure behind a form: the public facts above already give procurement the essentials, and the NDA pack carries the verifiers.
How quickly do you send the pack?
After mutual NDA, most packs are delivered within two working days, with facility walk-throughs scheduled around both parties’ time zones. Urgent vendor-onboarding deadlines should be stated in the first email.
Can we have the business license and registration number without an NDA?
These are identity documents of the legal entity and are shared under NDA during onboarding. The legal name, founding year, location, facility and scope are public above so you can pre-screen before any paperwork.
Do you respond to vendor questionnaires and audits?
Yes. Send your standard questionnaire and the responsible function answers it in writing; on-site and live video audits of the Longgang facility are available to qualified buyers.
Can you provide customer references?
References are handled confidentially. With permission, we arrange direct introductions or sanitised program evidence; we do not publish customer names or logos without consent, and we do not fabricate case studies.
Request the CYNRIN company profile pack
Email your company, brand and target product — the dated profile pack and walk-through scheduling come back from a real account owner.