Branded manufacturing
Proven reference platforms built under your brand: logo, color, packaging, manual and certification configuration aligned to your target market. The fastest route to shelf.
ABOUT CYNRIN
A Shenzhen smart-glasses manufacturer, not a trading desk
CYNRIN is the smart-glasses manufacturing brand of Shenzhen Kingring Technology Co., Ltd. Since 2018 we have engineered reference platforms and manufactured smart audio, camera and sport eyewear for consumer-electronics, sports, cycling and eyewear brands sold in more than forty markets — from one co-located R&D and manufacturing site in Longgang, Shenzhen.
Shenzhen, ChinaR&D and manufacturing on one site
Founded2018, Shenzhen
Facility20,000 m², Longgang District
People300+ employees · 50+ in R&D
ReachProducts sold in 40+ markets
COMPANY FACTS
The legal entity behind the brand
Procurement and compliance teams need the entity, not the marketing name. These are the facts we publish on the public site; registration number, full registered address and business-license documents are provided to qualified customers during vendor onboarding.
| Field | Detail | Verification |
|---|---|---|
| Legal company name | Shenzhen Kingring Technology Co., Ltd. | Matches business license (copy on request) |
| Manufacturing brand | CYNRIN | Brand used on this site and product platforms |
| Relationship | CYNRIN is the smart-glasses manufacturing brand of Shenzhen Kingring Technology Co., Ltd. | Contracts and invoices issued by the legal entity |
| Year founded | 2018 | Consistent across company and manufacturing records |
| Business type | OEM / ODM smart-glasses manufacturer (engineering + in-house assembly) | Auditable on site |
| Headquarters & site | Longgang District, Shenzhen, Guangdong, China | Single co-located R&D and manufacturing site |
| Facility size | 20,000 m² | Stated facility area; floor plan available during audit |
| Employees | 300+ total, including 50+ R&D / engineering professionals | Current headcount band |
| Core products | Smart audio glasses, camera glasses, sport & cycling smart eyewear (platforms V03-T5, E13, K01) | See Technology & Engineering |
| Markets served | 40+ countries — EU, North America, Middle East and APAC | Where CYNRIN-built products are sold |
| Sales contact | [email protected] | English-language sales contact point |
| Registration details | Company registration number and full registered address | Provided in the company profile pack under NDA |
Need a vendor file? Request the company profile pack — business license, registration details, facility evidence and certification scope, shared with qualified buyers.
WHAT WE DO
Three ways brands work with us
Every program starts from an approved product configuration. Where on the customization spectrum you sit determines scope, tooling, lead time and documentation — not whether we can build it.
Tailored configurations
Audio, camera, battery, lens and interaction adjustments engineered onto existing platforms, with EVT/DVT/PVT gates and project-specific test documentation.
From concept to manufacturable product
Customer-led development across industrial design, electronics, optics and firmware, turning an approved concept into a repeatable, shippable product you own in the market.
1 siteR&D and manufacturing co-located in Shenzhen
6 stagesSMT through packing owned in-house
40+ marketswhere CYNRIN-built products are sold
12 monthswarranty programs we stand behind
WHY WE EXIST
Mission, vision and operating principles
Mission. Make smart eyewear manufacturable at brand scale — closing the gap between ambitious product concepts and electronics that can actually be assembled, certified and supported year after year.
Vision. Be the manufacturing partner consumer-electronics and eyewear brands name first when a smart-glasses program has to ship to spec, on schedule and in volume.
- Evidence over claims. Every capability statement is backed by a line, a lab or a document a customer can inspect.
- One accountable team. Engineering, quality and the production floor share one building — and one schedule.
- Customer brand first. Products ship under the customer’s brand; their roadmap and pricing stay confidential.
- Gate discipline. EVT, DVT and PVT are not optional ceremony — they are how risk stays out of mass production.
FOUNDER & EXPERT
Meet Elisa
A direct partner for global smart eyewear projects — from initial product requirement to sample feedback and delivery coordination. Elisa leads engineering alignment, factory communication and schedule reviews, so buyers always have one accountable contact across the whole OEM/ODM program.
OUR STORY
A short, verifiable history
We publish only milestones we can document. Founded in 2018, CYNRIN has remained focused on a single category rather than broadening a generic electronics catalogue.
2018
Shenzhen Kingring Technology Co., Ltd. founded
The company is established in Shenzhen with a smart-glasses focus: product engineering and assembly organized on one Longgang site.
Since 2018
Reference platforms and OEM/ODM programs
The V03-T5, E13 and K01 platforms and a growing set of customer-brand programs have been engineered and manufactured, reaching 40+ markets. Detailed, dated program milestones are shared with customers under NDA rather than published as marketing.
Auditors and strategic partners can request a dated company timeline and supporting documents through [email protected].
EXPLORE THE COMPANY
The CYNRIN company pages
We separate the company, the manufacturer, the physical factory and the people behind them — so compliance and sourcing teams can verify each entity directly.
01
The Manufacturer
Manufacturer identity, in-house vs. partner capability matrix, evidence chain and buyer due-diligence answers.
Explore02Shenzhen Factory
The 20,000 m² Longgang facility: lines, equipment, processes, capacity basis and audit information.
Explore03Leadership & Teams
Key functions, who owns what in your program, and how engineering decisions reach the production floor.
Explore04Company Profile Pack
Verifiable company facts and the documents shared with qualified buyers during vendor onboarding.
Explore05Manufacturing Operations
How SMT, assembly, aging, quality verification and packing actually run.
Explore06Quality Control
IQC, IPQC, OQC, reliability testing and the AQL inspection system behind every shipment.
Explore07Certifications & Compliance
CE-RED, FCC, RoHS, REACH, UKCA and UN38.3 support, with honest scope and evidence rules.
Explore08Careers
Engineering, quality and commercial roles at the Shenzhen facility.
ExploreCOMPANY FAQ
Straight answers about the business
Are CYNRIN and Shenzhen Kingring Technology the same company?
CYNRIN is the smart-glasses manufacturing brand of Shenzhen Kingring Technology Co., Ltd. Contracts, invoices and compliance documents are issued by the legal entity, Shenzhen Kingring Technology Co., Ltd.; CYNRIN is the brand name customers work with.
Are you a factory or a trading company?
A manufacturer. Product engineering, SMT, assembly, aging, quality verification and packing are coordinated at one 20,000 m² site in Longgang, Shenzhen. Some specialized processes are partner-supported and are disclosed explicitly — see the manufacturer page for the in-house/partner matrix.
When was the company founded?
2018, in Shenzhen. A dated timeline with supporting records is available to qualified customers and auditors on request.
Where is the company located?
Longgang District, Shenzhen, Guangdong, China. R&D and manufacturing share one site; the full registered address and factory visit logistics are provided during vendor onboarding.
Can we audit the company and factory?
Yes. Qualified customers can conduct on-site audits and video factory walk-throughs, and we provide business-license, registration and facility evidence as part of the company profile pack. Start via [email protected].
Verify us the way your compliance team would
Request the company profile pack, book a factory walk-through, or send your vendor questionnaire — we answer due-diligence questions directly.