TSI Co., Ltd. is Korea’s No. 1 battery mixing equipment maker, headquartered in Dongtan, Hwaseong-si, Gyeonggi-do.
1. Company Overview
- Company name: TSI Co., Ltd., ticker 277880 (KOSDAQ)
- Founded: established in 1996 as Taesung Gigong, converted to a corporation in 2011
- Headquarters: 27 Dongtan Cheomdansaneop 1-ro, Hwaseong-si, Gyeonggi-do
- Business areas: mixing systems, custom mixing products, coater drying systems, high-speed dispersers
- CEO: Pyo In-sik (founder, CEO) / Capital and headcount: (undisclosed)
2. History and Workforce
Founded in 1996 under the name Taesung Gigong, the company entered the battery business in 1998 by importing equipment from Japan and built a partnership with Samsung SDI. It converted to a corporation in 2011 and listed on KOSDAQ in July 2020. In 2023, the founder sold the controlling stake to ‘TSI-Anda H General Private Placement Investment Trust No. 6,’ changing the ownership structure.
The company plans to build a new plant in Cheonan to more than double its existing production capacity, and is researching next-generation mixing technology through its Dispersion Technology Center. Department-level headcount: (undisclosed).
3. Core Technology and Key Equipment
The Corona Mixer, developed in 2016, is a patented product that cuts installation footprint in half and shortens mixing time compared to the earlier PD Mixer.
- Corona Mixer — developed in 2016, a patented product that reduces space and time versus the PD Mixer
- A range of products including a cathode-dedicated mixer, Conex Mixer, and Solu Mixer
- Continuous mixer — in development
- CNT (carbon nanotube) conductive-additive dispersion business — new entry
4. Production Infrastructure and Quality Assurance
Alongside its Dongtan, Hwaseong-si headquarters, the company is expanding with a new plant in Cheonan; once complete, production capacity is expected to grow from roughly KRW 250 billion to KRW 550 billion. Specific plant floor area, cleanroom status, etc.: (undisclosed).
5. Delivery Track Record and Partnerships
The company has supplied equipment to Samsung SDI (since 1998) and LG Chem/LG Energy Solution, and has expanded into the Japanese and US markets. In 2018, Tesla visited TSI’s headquarters to inspect its mixer equipment. Specific delivery years and quantities: (undisclosed).
6. Financials and Roadmap
On a consolidated basis, TSI posted revenue of KRW 272.0 billion, operating profit of KRW 15.6 billion, and net income of KRW 29.3 billion in 2024 (per disclosure filings). As of end-June 2025, its order backlog is estimated at roughly KRW 558.9 billion.
The company is pursuing new business in circulation mixing for LFP (lithium iron phosphate) batteries and CNT conductive-additive dispersion, and is also researching dry mixing and solid-state battery technology.
This profile was compiled from public sources including Wikipedia, DART (Korea’s electronic disclosure system), Money Today, Newstof, and Digital Today; unverified figures and undisclosed information have not been arbitrarily included.