1.Omulembe ogusooka ogw'abayambi ba kapiira .
[1839~1904] Mu mulembe guno, ebintu ebiyambako ebya kapiira bikiikirira abatumbuzi b’envubu ezitali za kiramu. amakolero ga kapiira gayingidde mu mulembe gwa inorganic vulcanization promoters, naye era gulina ebizibu nga obulungi obutono obw’okutumbula n’omulimu omubi ogw’okufuula vulcanization.
Mu 1839, vulcanization yazuulibwa.
Mu 1844, inorganic sulfide accelerator basic lead carbonate yazuulibwa.
Mu 1846, okuzuula ebirungo ebifuumuula, okuzuula enkola ya sulfur chloride cold vulcanization.
Mu 1904, kyazuulibwa nti kaboni omuddugavu yali asobola okukozesebwa mu kapiira.
2.Omulembe ogw'okusatu ogw'abayambi ba kapiira .
[1980~Present] Ebikulu ebiraga ebirungo ebigattibwa mu kapiira mu mutendera guno kwe kukuuma obutonde bw'ensi n'emirimu mingi.
Mu 1980~1981, omutumbuzi NS yakolebwa .
Mu 1985, Promoter wa Environmental Protection MTT yayanjulwa.
Okuva mu 1991, okukuuma obutonde bw’ensi abatumbula obutonde bw’ensi, sulfonamides, zinc omunnyo, sulfides, anticoke promoters ne promoters endala bakoleddwa era ne bakozesa mu lunyiriri. ZBPD, TBSI, CBBS, TBZTD, TIBTD obuwanguzi, ZDIBC, TOTS, ZBEC, AS100000000000.