▁Music ▁Company . ▁ ▁Crit ical ▁reception ▁ ▁References ▁ ▁External ▁links ▁▁▁▁▁ ▁Category : 2 0 1 5 ▁films ▁Category : 2 0 1 0 s ▁Mar ath i - language ▁films ▁Category : Ind ian ▁films <0x0A> </s> ▁is ▁a ▁Japanese , ▁Tokyo - based ▁chemical ▁company ▁and ▁the ▁world s ▁fourth ▁largest ▁sil icon ▁manufact urer . ▁ ▁The ▁company ▁was ▁founded ▁as ▁N ih on ▁S oda ▁K ogy o ▁Co ., ▁Ltd ., ▁a ▁producer ▁of ▁s oda ▁ash ▁in ▁ 1 9 1 8 ▁by ▁K ats u ji ro ▁I w ai . ▁It ▁changed ▁name ▁in ▁ 1 9 3 6 ▁to ▁Tok uy ama ▁S oda ▁Co ., ▁Ltd . ▁and ▁in ▁ 1 9 9 4 ▁to ▁its ▁present ▁name . ▁It ▁is ▁listed ▁on ▁the ▁Tokyo ▁Stock ▁Exchange ▁and ▁is ▁a ▁component ▁of ▁the ▁Nik ke i ▁ 2 2 5 ▁stock ▁index . ▁ ▁The ▁company ▁oper ates ▁across ▁Japan , ▁China , ▁South ▁Korea , ▁Singapore , ▁Malays ia , ▁Australia , ▁United ▁States , ▁and ▁Germany . ▁ ▁Business ▁segments ▁and ▁products ▁ ▁Chem ical s ▁business ▁ ▁S oda ▁ash ▁and ▁calci um ▁ch lor ide ▁ ▁Ch lor - alk ali ▁and ▁vin yl ▁ch lor ide ▁products : ▁ca ust ic ▁s oda ▁( liqu id , ▁fla ke ), ▁pro py l ene ▁ox ide , ▁vin yl ▁ch lor ide ▁mon omer ▁ ▁New ▁organ ic ▁chemical s : ▁is op rop yl ▁alco