About us

Since its establishment in 2017, TOSUN has prioritized the development of domestically controlled fundamental toolchain products for automotive electronics, positioning itself as a leading Chinese brand in this industry. TOSUN's primary software, TSMaster, and its associated hardware offer essential features such as embedded code generation, automotive bus analysis, simulation, testing, diagnostics, and calibration. These tools cover the entire range of activities involved in automotive vehicle and component development, testing, production, experimentation, and after-sales support.

There are more than 5,000 corporate users worldwide, covering: automotive OEMs, component suppliers, chip makers, equipment/service providers, engineering machinery, aerospace and other fields.

The headquarter is located in Jiading District, the center of Shanghai's automotive industry, with additional branches in Guangzhou, Beijing, Changchun, Chengdu, Chongqing, Changsha, Taiwan and Stuttgart.

Shanghai Headquarters

Shanghai Jiading District
Building 9, Lane 1288, North Jiasong Road, Waigang Town

Contact information

Commuting time


Dedicated to reducing costs and increasing efficiency for our users.
And accelerate the progress of hardware and software decoupling in the market!


Solve all engineering problems!
Engineer Everything!


The founding team has over 10 years of experience in the automotive electronics industry


Start Up TOSUN

Shanghai TOSUN Technology Ltd was officially established in 2017 to provide users with more options for bus tool chains. We are equipped to incorporate any valuable features and usage optimization suggestions into our product list to solve your engineering problems and increase fast productivity. TOSUN's solutions can significantly reduce your R&D test costs. Our easy-to-use hardware and software are designed to reduce learning costs and to be compatible with each tool.

  • Software is purely domestic, independent and controllable
  • Committed to reducing costs and increasing efficiency for customers
  • Tool chain support for the Chinese automotive industry
  • Localized core R&D for agile response to iterative user needs

SME Certification

  • Ministry of Science and Technology (MOST) Science and Technology-based SMEs Recognition
  • Shanghai Science and Technology SME Innovation Funding
  • Outstanding Innovation and Entrepreneurship Exhibit Award in China International Industry Fair University Pavilion
  • National Second Prize in China Innovation and Entrepreneurship Competition for Industrial Robotics


Shanghai High-Tech Enterprise

  • Awarded - 2021 GEW Global Entrepreneurship Week "Angel Fund Outstanding Project Eagle Award"
    We have completed an angel round of funding of tens of millions of dollars to rapidly expand the same star technology to various fields.
2022 ~ Now
  • Won - Second Prize of Shanghai "China Creative Wings" Entrepreneurship and Innovation Competition

We look for innovation from the market!
We simplify the process from the complexity!
We overcome obstacles with you!