Huiwan Technologies Co., Ltd (深圳市汇湾科技有限公司, hwtek.com) holds the IEEE MA-L block 50:0A:52, registered to "Huiwan Technologies Co. Ltd" at A603, Wuhan University SZ IER Building, 6 Yuexing 2nd Road, Nanshan District, Shenzhen, Guangdong, China. The registry hit and the company's public web presence corroborate each other: this is a real, active Shenzhen-based embedded-computing ODM, not a shell or mis-attributed name. Huiwan designs and manufactures industrial IoT mainboards and single-board computers — Mini-ITX, Nano-ITX, ATX, Micro-ATX, and 3.5"/5.25" form factors — targeting industrial automation, network-security-appliance integrators, and IoT-gateway builders rather than the consumer market. Representative products include the HW-GJ51 IoT gateway (Intel Jasper Lake, dual Gigabit LAN, Mini-PCIe for Wi-Fi/4G) and the HW-N-P128 network-security appliance board (Intel Celeron J1900); platforms span x86, ARM, Android, and domestic Chinese architectures. Because these boards ship with Gigabit LAN and Wi-Fi, MAC addresses from the 50:0A:52 block can legitimately appear on networks inside industrial and security gear. The single registered block (MA-L, ~16.7M addresses) is consistent with a focused B2B board vendor. No CVEs, security advisories, or threat-intelligence reports name this vendor; "network security" appears in its materials only as a customer vertical it supplies, not as a property of its own products. IEEE publishes no assignment date for OUI/MA-L blocks, so the registration date is genuinely unknown — not a withheld placeholder.
- IEEE assignment
- 50:0A:52 → Huiwan Technologies Co. Ltd (MA-L) [Confirmed] — enrichment/registries/oui.csv, line 872 (IEEE MA-L)
- Registry / block size
- MA-L (24-bit OUI, ~16.7M addresses); single registered prefix found [Confirmed] — oui.csv line 872. Not present in mam.csv (MA-M) or oui36.csv (MA-S).
- Registered address
- A603, Wuhan University SZ IER Bldg., 6 Yuexing 2nd Rd., Nanshan Dist., Shenzhen, Guang Dong, CN 518108 [Confirmed] — oui.csv line 872 (IEEE registry address)
- HQ / country
- Shenzhen, Nanshan District, Guangdong, China [Confirmed] — https://hwtek.com/contact/
- Vendor name (full)
- Huiwan Technologies Co., Ltd (深圳市汇湾科技有限公司) [Confirmed] — https://hwtek.com/contact/, https://bbs.fobshanghai.com/company/r169314719gmxh4.html
- Assignment / registration date
- Unknown — IEEE publishes NO assignment date for OUI/MA-L blocks; oui.csv carries only Registry, Assignment, Org Name, Org Address. Any third-party "date registered" is a database artifact, not an IEEE fact. [Unknown] — IEEE oui.csv schema
- Company status
- active; self-described "national high-tech enterprise" with a core team citing ~30 years of industry experience [Likely] — https://hwtek.com/
- Device types
- industrial IoT mainboards and SBCs — Mini-ITX, Nano-ITX, ATX, Micro-ATX, 3.5"/5.25" boards; IoT gateways, network-security appliance boards, embedded industrial computers (x86/ARM/Android/domestic architectures) [Confirmed] — https://hwtek.com/product/
- Notable products
- HW-GJ51 IoT gateway (Intel Jasper Lake, 2x GbE, Mini-PCIe Wi-Fi/4G); HW-N-P128 network-security appliance board (Intel Celeron J1900) [Confirmed] — https://hwtek.com/product/
- Industry
- embedded computing / industrial-IoT mainboard ODM (B2B) [Confirmed] — https://hwtek.com/product/, https://bbs.fobshanghai.com/company/r169314719gmxh4.html
- Security context
- no CVEs, advisories, or threat-intel reports found for this vendor or its products; "network security" appears only as a served customer vertical [Confirmed] — https://hwtek.com/product/
- Related entities
- Xiamen Miwu Huiwan Technology Co., Ltd. (厦门蜜物汇湾科技有限公司) — Fujian entity, shares only part of the name; not clearly the same legal entity [Likely] — https://discovery.patsnap.com/company/xiamen-miwu-huiwan-technology/
- Vendor site
- https://hwtek.com/ [Confirmed] — https://hwtek.com/contact/
- Analyst note
- the registry block (R1) and company web research (W1) agree on identity; W1 did not independently surface the 50:0A:52 prefix in third-party MAC databases, but the first-party IEEE oui.csv entry is authoritative and stands. A 50:0A:52 globally-administered address identifies genuine Huiwan-registered hardware; boards may also carry chipset/NIC OUIs (Intel, Realtek) on other interfaces. [Confirmed] — oui.csv line 872, https://hwtek.com/