21Vianet

21Vianet is a niche in the AI & Data Center segment of the semiconductor & AI supply chain, headquartered in China. Its key suppliers include Vertiv, Schneider Electric, Eaton. Its key customers include Amazon (Annapurna Labs), Microsoft, Alphabet (Google).

Chinese carrier-neutral data-center and cloud operator.

Ticker
NASDAQ: VNET
Headquarters
China
Revenue
$544M (FY2019) · +10.0% YoY
Net income
$-36M
Operating margin
20.5%
Market position
niche
Value-chain segment
Data Center Operators (Colo)
Key products
wholesale IDC (Internet Data Center) services, retail IDC colocation cabinets

About 21Vianet

21Vianet, headquartered in China, operates in the Data Center Operators (Colo) segment of the semiconductor & AI supply chain and is positioned as a market niche there. Its key products include wholesale IDC (Internet Data Center) services, retail IDC colocation cabinets. wafergraph maps 4 tracked suppliers and 5 tracked customers for 21Vianet across the value chain. It has a supply-chain criticality score of 6/100, with 19 companies downstream of it.

Role in the chain

21Vianet is a market niche in AI & Data Center (Data Center Operators (Colo)), headquartered in China. Chinese carrier-neutral data-center and cloud operator.

Diligence questions

  1. The dataset records 4 tracked suppliers for 21Vianet. Which of those edges are researched (named in a filing or primary source) versus segment-inferred, and what happens if one of them stops shipping?
  2. 3 of 21Vianet's tracked suppliers are a monopoly or leader (including Delta Electronics, Schneider Electric, Vertiv). Which of those are actually single-source for the process step you care about?
  3. The dataset names 5 tracked customers for 21Vianet. How concentrated is demand among those names, and which of them have a documented second source in this graph?
  4. 21Vianet is headquartered in China. What jurisdiction, export-control or logistics risk sits at that HQ, versus at the fabs or plants the filings actually name?
  5. 21Vianet trades as NASDAQ:VNET. What does the latest reported period say about capacity and backlog versus the graph position above?
  6. Before treating any edge as a verified relationship, check the provenance labels on the company page and the method note at /methodology.

Full diligence pack for 21Vianet

Key products

  • wholesale IDC (Internet Data Center) services
  • retail IDC colocation cabinets

Suppliers

Customers

More AI & Data Center companies

Compare with

NTT · American Tower · Iron Mountain · IREN · Hut 8 · TeraWulf

Sources

Open the interactive supply-chain view →

Cite as: wafergraph, “21Vianet — supply chain, financials & market position”, https://wafergraph.com/company/21vianet (data as of 2026-09-05).

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