Guantao Deals │Guantao Advises Tosso, an AI-Powered Robotic Sanding and Polishing Company, on Its Series A Financing
Recently, Tosso Automation Technology (Shanghai) Co., Ltd. ("Tosso") announced the completion of Series A financing of tens of millions of RMB with Yunshi Capital as the investor. The proceeds from this round will primarily be used for R&D, team expansion, and operational enhancement, supporting the company in further optimizing and iterating its products. Prior to this round, Tosso had completed an angel round of financing invested by SenseTime.
Mr. Ma Yupeng, partner at Guantao Law Firm, provided full-scope legal services for this project, including advising on the financing structure, negotiating and reviewing the financing agreements, and drafting and implementing the relevant legal documents.
Founded in 2016, Tosso is a high-tech company dedicated to addressing the challenges of automation in industrial sanding processes. The company focuses on developing and manufacturing AI-powered robotic sanding and polishing systems, and provides automated surface-finishing solutions to its clients. Its core proprietary product modules include the TS flexible constant-force sanding unit, the TS multi-unit adaptive sanding tool, the TS automated consumables-replacement module, as well as AI-based process modules and an optical inspection system. By integrating these self-developed modules, Tosso’s AI-powered robotic sanding and polishing systems can be widely applied in sectors such as rail transit, aerospace, wind power, and automotive manufacturing.

Guantao is among the earliest PRC law firms to provide legal services in the technology and innovation sector. Its services cover the full lifecycle of technology-oriented enterprises, including technology commercialization, company formation, equity structure design, venture financing, equity incentive plans, capital markets services, intellectual property management, and labor and human resources matters. Guantao’s lawyers have extensive knowledge of laws and regulations relating to technology, corporate governance, and contracts, as well as regulatory policies on equity structure planning, technology commercialization, researcher entrepreneurship and part-time engagements, and the capital markets. With a strong understanding of the innovation pathways of research institutions and technology companies and the commercialization of scientific and technological achievements, the firm is well positioned to safeguard clients’ commercial interests while effectively managing legal risks.