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AaltoSemi

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A manufacturer of packaging substrate products

Nanjing City, ChinaFounded 2021Semiconductors
Valuation $1–2.5B Last recorded · 2026
Total funding $100–500M Disclosed equity funding
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About AaltoSemi

Based in Nanjing, China, AaltoSemi operates as a developer and manufacturer of advanced packaging substrate products essential for semiconductor applications. The company was established on May 8, 2021, to address the growing demand for high-end integrated circuit (IC) substrates. The name "AaltoSemi" is inspired by the Nordic designer Alvar Aalto, reflecting a philosophy of human-centric design and service.

AaltoSemi provides comprehensive IC substrate services, from research and development to design, production, and testing. Its core product offerings include Embedded Trace Substrates (ETS), Flip Chip Ball Grid Array (FCBGA), and Antenna in Package (AiP) substrates. Specifically, the company produces high-end packaging substrates such as BT, ABF, and embedded trace substrates for flip-chip chip-scale packages (FCCSP) and FCBGA. These components are critical for the functionality of CPUs, GPUs, FPGAs, network ASICs, 5G mobile devices, and automotive electronics. The business serves a client base that requires solutions for high pin counts and superior electrical performance in products like smartphones, consumer electronics, and 5G-related applications.

The company operates from a highly automated and intelligent IC substrate production park in the Pukou Economic Development Zone in Nanjing. AaltoSemi has secured significant venture capital backing to support its growth and production line construction, with total funding reaching $82.6 million from a pool of 27 investors, including notable names like BYD Company, CTC Capital, and Gaorong Capital. The firm's business model is centered on the B2B sale of its manufactured semiconductor components. By focusing on the development and mass production of high-precision, high-reliability substrates, AaltoSemi aims to support the continuous advancement of chip design and meet the stringent quality demands of the automotive and medical sectors.

Source: Dealroom company data

At a glance

Status
Operational
Founded
2021
Headquarters
Nanjing City, China
Open positions
None listed
Dealroom signal
19.3/100
Industry
Semiconductors
Sector
Semiconductors, Semiconductor Designers and Manufacturers, SoC (System-on-Chip), Hard Tech, DT and LS, science-based
Technology
Deep Tech
Client focus
b2b
Links
Website

Funding history

2 recorded events

Company financing events and reported valuations.

Deal typeDateAmountValuationInvestorsSource
SERIES BOther financing Nov 2023 $0 — Undisclosed ↗
SERIES AOther financing Apr 2023 $69M $275M North Star Fund · Xiamen Lianhe Capital · Kunqiao Capital · Gaorong Capital ↗
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Growth signals

AaltoSemi website traffic

Latest recorded traffic for AaltoSemi is 550 monthly website visits, up 223.5% over the last three months.

Latest monthly visits550 3-month web change+223.5%
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Investments and acquisitions

Capital deployed

Recent portfolio relationships for companies that also act as investors or acquirers.

Investors

10 investors on the cap table

From Dealroom's funding and investor records, grouped by the round each investor first entered.

Series A10 investors entered at this stage

  • North Star Fund
  • Xiamen Lianhe Capital
  • Kunqiao Capital
  • Gaorong Capital
  • Summitview Capital
  • CTC Capital
  • TEDA Venture Capital
  • Junhai Chuangxin Consulting Management
  • Jiangbei New District Development Fund
  • Starrui Capital
Founders Hidden — book a demo/100 quality score
Key operators Hidden — book a demo quality score
Potential founders Hidden — book a demo likely future founders
Startup mafia Hidden — book a demo alumni-founded startups
Talent movements Hidden — book a demo in · Hidden — book a demo out past 12 months

Source: Dealroom Talent Intelligence.

Global footprint

Workforce and web traffic by country
Workforce by country
🇨🇳 China · Nanjing City HQ
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Market sentiment

Posts on X, past 7 days

An AI-synthesised read of the highest-engagement posts about AaltoSemi on X, ranked by likes and reposts, corporate channels excluded.

Reading the room on X — pulling top posts and synthesizing themes…

Source: X recent search ranked by engagement (likes + retweets) · Synthesis by Claude · Cached for 1 hour

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