1975. 05 ‰ïŽÐÝ—§ iƒ\ƒEƒ‹ “Œ‘å–å –Ê–q“´ ‚U‚X‚S\‚Sj
1975. 07 ‰vŽR—AoŽY‹ÆH’c“à HêvŒ÷ ‹y‚Ñ –{ŽÐˆÚ“] i‘S–k‰vŽRj
Ž‘–{‹à ‚P‰­‚Pç‚T•S‚R\–œ won
1975. 12 Ortho Nitro Aniline i‚n‚m‚`j¶ŽY
1976. 02 Para Nitro Aniline i‚o‚m‚`j¶ŽY
1985. 11 2,4,5-Trichloro-Aniline (TCA) ŠJ”­¶ŽY
1986. 11 i—Lj‰»–ò’ʏ¤ Ý—§AŽ‘–{‹à ‚Pç–œWon, Offer‹Æ “o˜^
1986. 12 ’†Œ˜—AoŠé‹Æ Žw’è i’†¬Šé‹Æ‹âs’·j
1987. 04 Ž‘–{‹à ‚Tç–œ won‚É ‘Ž‘
1987. 05 –fˆÕ‹Æ “o˜^
1987. 10 •tÝ ‰»–òŒ¤‹†Š Ý—§ i‰ÈŠw‹Zp’¡ ’·Š¯ ”F‰Âj
1987. 11 2•S–œƒhƒ‹ —Ao“ƒ ŽóÜ‹y‚Ñ ‘–±‘— •\²
1988. 03 PNA Hê‘Ý ‹y‚Ñ ¶ŽYH’öŽ©“®‰»
1988. 03 —LŒ÷½ŽÀ”[Å •\² ià–±•”’·Š¯j
1989. 06 ŠÂ‹«•Û‘S—LŒ÷ •\² iŠÂ‹«’¡’·Š¯j
1988. 06 i—Lj‰»–ò’ʏ¤ ‚æ‚è iŠ”j‰»–ò’ʏ¤‚É ŽÐ–¼•ÏX
1988. 07 Seika Sangyo‚Æ “ú–{ ISK‚ÌTiO2 ‘“à‘”Ìæ̑㗝“X Œ_–ñ’÷Œ‹
1989. 11 500 –œƒhƒ‹—Ao“ƒ ŽóÜ i‘哝—́j
1990. 02 ‚o‚m‚`Hê V’z ‹y‚Ñ ¶ŽYŽ{Ý Šg[
1990. 03 Ž‘–{‹à ‚U‰­won‚É ‘Ž‘
1990. 07 “ú–{ ‘åã‚É ˜A—Ž––±Š Ý’u
1991. 04 Œn—ñŽÐ ƒ†ƒjƒIƒ“‰»¬iŠ”j‹zŽû‡•¹A Ž‘–{‹à‚Q‰­‚Tç–œwon‚É‘Ž‘
1991. 0‚T Para Nitro Chloro Benzene-2-Sulfonic Acid(PNCB-SA) ŠJ”­¶ŽY
1991. 09 1D5-Naphthalene Disulfonic Acid (1D5-NDS) ŠJ”­¶ŽY
1992. 12 Para Chloro Ortho Nitro Aniline (PCONA) ŠJ”­¶ŽY
1993. 0‚R Ortho Chloro Para ‚mitro Aniline iOCPNAjŠJ”­¶ŽY
1993. 09 Para Nitro Phenol Sodium Salt (PNPS) ŠJ”­¶ŽY
1994. 06 ”_–òŒ´Þ ACTF¶ŽYŠJŽnAŽ‘–{‹à‚T‰­won‚É ‘Ž‘
1995. 11 1ç–œƒhƒ‹ —Ao“ƒ ŽóÜ i‘哝—́j
1996. 01 –{“X‚ðƒ\ƒEƒ‹]“ì‹æ ‰wŽO“´‚W‚Q‚U\‚Q‚W‚Ɉړ]
1997D0‚U –³ÐŠQ ‚R”{’B¬ •\² i˜J“­•”’·Š¯j
1998D12 –{ŽÐ‚ð ƒ\ƒEƒ‹]“ì‹æ ‰wŽO“´ ‚W‚R‚O\‚U‚V‚É ˆÚ“]
2000D02 ’†¬Šé‹Æ‹âs‚æ‚è ƒtƒAƒ~ƒŠŠé‹Æ‚ÉŽw’肳‚ê‚é
2000. 05 Œn—ñŽÐ iŠ”jƒ†ƒjƒIƒ“•¨ŽY‚Æ ‡•¹
Ž‘–{‹à‚T‰­‚Qç‚Q•S–œwon‚É •ÏX
2001. 08 ¤†‚ðiŠ”jƒ†ƒjƒIƒ“ ƒPƒ~ƒJƒ‹ ‚É•Ï