SJ Semiconductor

SJ Semi is a MEOL (Middle-End of Line) foundry which implements front-end wafer manufacturing and quality systems to MEOL operations.

SJSemi is China's first 300mm MEOL (Middle-End-Of-Line) foundry specializing on advanced Bumping and wafer level packaging (WLP).

SJSemi was founded in August 2014 and is headquartered in Jiangyin, Jiangsu, China.


SJ Semiconductor started 28/14nm bumping for Smartphone AP chips in 2016, and is the first one to provide bumping for advanced DRAM and 12" power management chips in Mainland of China.


SJ Semiconductor is committed to providing a convenient one-stop service to supply high quality and efficient chips for local and international customers, as well as help strengthening their global competitiveness.


SJSemi is backed by Walden CEL, CCB PE, Qualcomm, Oriza Rivertown, CCIC Capital, Oriza Hua Capital, CCB Trust, Growth, Country Garden Venture, HTPE, and others. The company raised $300M in Series C round on Oct 08, 2021. This brings SJSemi's total funding to $630M to date. The company is estimated to be valued at over $1B.



  • Year founded: 2014
  • Funding Info: $630M over 3 Rounds (Latest Funding Type: Series C)
  • Yearly Revenue: NA
  • Employee Size: 201-500
  • Business Valuation: Valued at over $1B as of Oct 08, 2021
  • City/Town: Jiangyin
  • State: Jiangsu
  • Country: China
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