Guangzhou Qingying Acoustics — single MA-L prefix E8:EB:DD (audio/acoustics maker)

Guangzhou Qingying Acoustics Technology Co., Ltd holds a single IEEE MA-L block, OUI prefix E8:EB:DD, registered to the Baiyun District of Guangzhou, Guangdong, China. The registry address — Room 905, 863 Industrialization Promotion Center, Guangzhou Private Science Park, Taihe Town — places it in the dense Guangzhou-area electronics ecosystem. The company name explicitly carries "Acoustics" (声学), which points to an audio focus, and a single MA-L block is the typical footprint of a smaller hardware maker shipping one connected-device line rather than a broad portfolio. Beyond the registry record, public corroboration is thin: no official vendor website, product catalogue, or trade-directory listing was located for this exact legal entity, so the specific device line behind the prefix cannot be confirmed from name alone. Treat the "audio device" reading as a name-based inference, not a verified product fact. A common lookup trap applies here — the "First Seen" / "Last Modified" date that some third-party MAC databases show for this OUI is a crawler artifact, not an IEEE registration date; IEEE publishes no assignment dates in its public OUI data. Also distinct: a "Guangzhou Qingying Technology Co., Ltd." (no "Acoustics") on trade directories, and Shenzhen Qingying Electronics Co., Ltd. in a different city, are separate entities and should not be conflated with this OUI holder. For triage, an E8:EB:DD address reliably maps to this registrant, but OUI alone says nothing about the end-product class without further device evidence.

IEEE assignment

1 prefix → E8:EB:DD → Guangzhou Qingying Acoustics Technology Co., Ltd [Confirmed] — IEEE MA-L (enrichment/registries/oui.csv line 249; corroborated by enrichment/registries/manuf line 54634)

Registry / block size

MA-L (24-bit OUI), single block [Confirmed] — IEEE MA-L (oui.csv). 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" / "First Seen" on third-party tools (e.g. maclookup.app shows 2022-12-21) is a database artifact, not an IEEE fact.

HQ / country

Room 905, 863 Industrialization Promotion Center, Guangzhou Private Science Park, Taihe Town, Baiyun District, Guangzhou, Guangdong, CN 510000 [Confirmed] — IEEE MA-L (oui.csv line 249)

City

Guangzhou, Guangdong, China [Confirmed] — IEEE MA-L (oui.csv); https://maclookup.app/vendors/qingying-acoustics-technology-co-ltd

Company status

registrant active on IEEE listing; independent corporate-status confirmation not located [Likely] — IEEE MA-L (presence on current listing)

Device types

not confirmed; name ("Acoustics" / 声学) suggests consumer audio / Bluetooth audio, but this is a name-only inference with no product evidence located [Likely] — https://maclookup.app/vendors/qingying-acoustics-technology-co-ltd (name only)

Notable products

none located [Unknown] — no official site, catalogue, or trade-directory listing found for this exact entity

Verified prefix

E8:EB:DD (MA-L) [Confirmed] — IEEE MA-L (oui.csv line 249)

Vendor website

none located [Unknown] — a "Guangzhou Qingying Technology Co., Ltd." (without "Acoustics", listed as a coffee/solar distributor) on Global Sources is a DIFFERENT entity; no site for the Acoustics company found on Alibaba / Made-in-China / general search (https://www.globalsources.com/guangzhou-qingying/company-profile_6002000089459.htm)

Registration date

Unknown — IEEE publishes none; the 2022-12-21 "First Seen" on maclookup.app is a third-party DB artifact, not an IEEE fact [Unknown] — https://maclookup.app/vendors/qingying-acoustics-technology-co-ltd

Security context

no CVEs, advisories, or incident reports referencing this vendor or products attributed to it were found; any risk would be generic IoT/BT-audio class-level, not vendor-specific [Unknown] — negative finding (web search)

Special note

Single MA-L block. The "First Seen 2022-12-21" date on third-party tools is a crawler artifact, not an IEEE registration date. Do not conflate with "Guangzhou Qingying Technology Co., Ltd." (no "Acoustics", trade-directory coffee/solar entity) or Shenzhen Qingying Electronics Co., Ltd. (different city/entity). [Confirmed] — IEEE MA-L; https://www.globalsources.com/guangzhou-qingying/company-profile_6002000089459.htm

Related entities

Shenzhen Qingying Electronics Co., Ltd. — different city, separate legal entity, battery maker also holding the US "LEICOZIC" trademark over amplifiers/loudspeakers/microphones/headphones (USPTO Serial 88022820); adjacent audio-hardware space but NOT the same company [Likely] — https://trademarks.justia.com/880/22/leicozic-88022820.html ; http://www.qybattery.com/en/about.asp

Analyst note

An E8:EB:DD address maps reliably to this registrant, but the end-product class is unverified — do not present "audio device" as a confirmed fact, and don't infer a device type from OUI alone without corroborating device evidence.