Mitsubishi Gas Chemical Company(4182.T)
HQ JP40% share
Japanese chemical maker; leading Asian producer of hydrogen peroxide (incl. high-purity semiconductor grade) and specialty chemicals.
chemical · input
High-Index Lens Monomer (Mitsui MR-series)
Thiourethane high-refractive-index spectacle-lens monomer (MR-8/MR-10/MR-174 etc.). Mitsui Chemicals is the de-facto global standard with a dominant share; MGC is the only meaningful #2.
12
Source countries
3
Companies
1
Goods affected
0
Claims on record
What depends on it
Goods that need this input
1 essential American goods rely on high-index lens monomer (mitsui mr-series) somewhere upstream in their supply chain.
Where it comes from
Source countries
Share of global supply, by country.
| Country | Share of supply |
|---|---|
| JPJapan | 20% |
| CACanada | 14% |
| DEGermany (Federal Republic of Germany) | 14% |
| MXMexico | 8% |
| KRSouth Korea (Republic of Korea) | 7% |
| FRFrance | 6% |
| CNChina | 6% |
| GBUnited Kingdom | 4% |
| TWTaiwan | 3% |
| TRTurkey | 3% |
| INIndia | 2% |
| BEBelgium | 2% |
Who makes it
Supplier companies
3 companies produce high-index lens monomer (mitsui mr-series).
KOC Solution Co., Ltd.
HQ KR
Korean maker of thiourethane/episulfide high-refractive-index optical monomers for spectacle lenses; the main challenger to Mitsui.
Mitsui Chemicals(4183.T)
HQ JP
Japanese chemical conglomerate (TYO: 4183, HQ Tokyo); recognized as the quality leader for ultra-high-purity electronic grade IPA for semiconductor applications, achieving parts-per-billion impurity levels. In Q2 2024, Mitsui Chemicals introduced a bio-based IPA derived from renewable acetone with 25,000 MT/year initial capacity — part of Japan's push toward bio-based chemicals. Mitsui is one of the world's leading specialty chemical companies with deep ties to the Mitsui Group keiretsu (same group as Mitsui & Co. trading, Mitsui Fudosan real estate, etc.). Mitsui Chemicals' IPA is particularly important for Japanese and Taiwanese semiconductor fabs. The company that dominates bio-based IPA is also part of the same industrial group that owns one of Japan's largest steel mills (Nippon Steel was historically Mitsui-linked).