Guangzhou Shiyuan Electronic Technology (CVTE) — 31 prefixes (MA-L)

Guangzhou Shiyuan Electronic Technology Company Limited is the legal name behind the brand CVTE (China's Vision, Technology and Electronics; Shenzhen-listed, stock code 002841.SZ), a large Chinese OEM/ODM best known for interactive flat panels and LCD main boards. Its OUI footprint in the local IEEE registry mirror is substantial: 31 MA-L blocks (24-bit OUIs, ~16.7 million addresses each), all registered to the same Yunpu Industry District address in Guangzhou. The block count reflects the breadth of networked hardware CVTE ships — Seewo interactive panels for education, MAXHUB collaboration displays for boardrooms, conferencing peripherals (webcams, speakerphones, PTZ cameras), digital signage, LED video walls, and LCD control boards supplied to third-party TV and monitor brands. Consolidating these 31 prefixes into one vendor entry is far more useful than minting near-identical per-prefix pages. Two name spellings appear across the blocks — "Guangzhou Shiyuan Electronic Technology Company Limited" (majority) and "Guangzhou Shiyuan Electronics Co., Ltd." (a minority of rows, e.g. 74:72:B0, 70:2E:D9, 78:DD:D9) — but both resolve to the same registered entity at the same address. As with all OUI data, the practical caveat holds: a CVTE-registered globally-administered MAC reliably identifies genuine CVTE hardware, but MAC randomization on Wi-Fi clients and the absence of IEEE-published registration dates mean OUI alone is a coarse signal — useful for asset classification, not for inventory completeness or access control.

IEEE assignment

31 MA-L prefixes → Guangzhou Shiyuan Electronic Technology Company Limited, registered Guangzhou, Guangdong, CN [Confirmed] — local IEEE registry mirror (enrichment/registries/oui.csv, 31 matching rows; no match in mam.csv or oui36.csv)

Registry / block size

MA-L (24-bit OUI; ~16.7M addresses per block); 31 blocks held [Confirmed] — enrichment/registries/oui.csv. No MA-M or MA-S (OUI-28/OUI-36) blocks present. NOTE: IEEE's public OUI data publishes NO assignment/registration date (oui.csv columns are only Registry, Assignment, Organization Name, Organization Address); any "date registered" on third-party tools (e.g. maclookup.app) is a database-ingestion artifact, not an IEEE fact.

HQ / country

No.6, 4th Yunpu Road, Yunpu Industry District, Guangzhou, Guangdong, CN 510530 [Confirmed] — IEEE MA-L registry address; corporate global site global.cvte.com

Name variants

"Guangzhou Shiyuan Electronic Technology Company Limited" (majority of blocks) and "Guangzhou Shiyuan Electronics Co., Ltd." (rows 74:72:B0, 70:2E:D9, 78:DD:D9) — same entity, same registered address [Confirmed] — enrichment/registries/oui.csv

Trade name / brands

CVTE (parent; stock code 002841.SZ, Shenzhen Stock Exchange); consumer/enterprise brands Seewo (education interactive panels) and MAXHUB (enterprise collaboration displays) [Confirmed] — global.cvte.com/about_intro, electronics.alibaba.com

Company status

active [Confirmed] — global.cvte.com

Device types

interactive flat panels (IFP) for education and enterprise conferencing; LCD main boards (OEM/ODM for TVs and monitors); A/V conferencing peripherals (webcams, speakerphones, PTZ cameras, communication bars); digital signage and LED display walls; medical-grade displays; car infotainment; smart-home / wireless-audio products. Commercial and consumer lines are networked (Wi-Fi/Ethernet/Bluetooth) in normal operation. [Confirmed] — global.cvte.com/about_intro

Verified sample prefixes (all MA-L)

E0:27:6C, C0:8A:CD, B8:41:D9, 54:01:4A, BC:6B:FF, 8C:35:92, 74:72:B0, F4:20:15 [Confirmed] — enrichment/registries/oui.csv

Full prefix set (31 MA-L)

E0:27:6C, C0:8A:CD, B8:41:D9, 54:01:4A, BC:6B:FF, 8C:35:92, 74:72:B0, F4:20:15, 8C:7A:B3, 74:24:CA, 3C:BE:8E, 20:9B:E6, EC:C1:AB, B4:AD:A3, 70:2E:D9, 78:DD:D9, 1C:2F:A2, 28:3D:E8, 58:41:46, DC:BD:7A, D4:9E:3B, 38:54:39, D8:74:EF, 84:93:EC, 90:E4:68, 18:84:C1, BC:FA:B8, E8:51:9E, 44:37:0B, DC:EC:4F, B4:04:29 [Confirmed] — enrichment/registries/oui.csv. (Third-party aggregator maclookup.app showed 28 blocks in a Feb 2026 snapshot — third-party snapshots drift below the registry mirror; the local registry is authoritative for the prefix set.)

Allocated date

Unknown — IEEE publishes no registration dates for OUI/MAC blocks; no date column exists in oui.csv. Any third-party "date registered" is a database artifact. [Confirmed null] — enrichment/registries/oui.csv

Security context

No CVEs attributable to CVTE / Seewo / MAXHUB products were found in NVD or targeted web searches through June 2026; CVE results surfaced by a site:nvd.nist.gov query belonged to unrelated vendors (TVT DVR, Huawei HarmonyOS). No CISA KEV entries or threat-intel reports naming CVTE devices. As a Chinese-manufactured networked-display vendor with broad global enterprise deployment, routine supply-chain and data-sovereignty/network-segmentation review applies — a general consideration, not a CVTE-specific published vulnerability. [Likely] — nvd.nist.gov, global.cvte.com/about_intro

Website

https://global.cvte.com [Confirmed] — global.cvte.com/about_intro

Analyst note

A CVTE/Shiyuan OUI on a globally-administered address identifies genuine CVTE hardware (often a Seewo or MAXHUB panel, or a third-party display using a CVTE main board); absence doesn't mean "not CVTE" due to Wi-Fi MAC randomization. Don't rely on OUI alone for inventory or MAC-based access control. Networked IFPs and conferencing cameras in sensitive enterprise/government environments warrant routine network segmentation.