JI Tech is a KOSDAQ-listed chemical materials company whose core business is precursors used in semiconductor deposition (CVD/ALD) processes. The company operates diverse businesses including semiconductor precursors, photomask cases (PMC), OLED sublimation purification, and specialty gas distribution.
Its main products are Si-, Ti-, Zr-, and Hf-based precursors, supplied to about ten global semiconductor makers including Samsung Electronics, SK hynix, Micron of the United States, and Kioxia of Japan. The company is reported to hold the largest domestic production capacity for certain silicon precursor products.
Based on recently reported figures, precursors account for roughly 79% of revenue, making them the core of the business structure.
Photomask cases, OLED organic material sublimation purification, and specialty gas distribution make up the remaining revenue, alongside new initiatives such as canisters for secondary battery electrolytes and additives and OLED organic intermediate synthesis.
In carbon-neutral new business, the company runs a CCUS (carbon capture, utilization, and storage) operation through subsidiary Daeheung CCU, which built Korea's first private CO2 capture and liquefaction plant at the Saemangeum industrial complex in Gunsan, North Jeolla Province, with capacity to produce about 42,000 tons of liquefied carbon dioxide annually.
A new plant near Hyderabad, India, in Chegunta was completed in September 2025 and is being used to diversify global customers through canister production for semiconductor and secondary battery applications.
The company has also expanded into bromine-based specialty chemicals, being the sole domestic supplier of boron tribromide, a solar panel doping material, to Hanwha Qcells.