Taariikhda Horumarinta ee PCB ee Shiinaha

Tusaalaha PCB-ga waxa uu ka yimi habka iswaydaarsiga talefanka iyadoo la adeegsanayo fikradda “wareeg” horraantii qarnigii 20-aad.Waxaa lagu sameeyaa iyadoo la gooyo birta birta ah ee kirishbooyada laynka oo ku dhejiya inta u dhaxaysa laba xabbadood oo waraaqo paraffin ah.

PCB macnaha dhabta ah waxa uu dhashay 1930kii.Waxaa lagu sameeyay daabacaad elektaroonik ah.Waxay qaadatay looxa dahaarka ah sida walxaha salka, gooyay cabbir gaar ah, oo lagu dhejiyay ugu yaraan hal qaab korantada, oo lagu habeeyay godadka (sida godadka qaybaha, godadka xidhidhiyaha, godadka birta, iwm) si loogu beddelo shasis ee qalabkii hore. qaybaha elektarooniga ah, oo ay ogaadaan xidhiidhka ka dhexeeya qaybaha elektarooniga ah, Waxay ka ciyaartaa doorka gudbinta gudbinta, waa taageerada qaybaha elektarooniga ah, oo loo yaqaan "hooyada alaabta elektaroonigga ah".

Taariikhda horumarinta PCB ee Shiinaha

Sanadkii 1956, Shiinaha wuxuu bilaabay inuu horumariyo PCB.

1960kii waxa la soo saaray hal guddi oo dufcad ah, waxa la soo saaray laba-geesood oo yaryar, waxaana la sameeyay guddi lakabyo badan.

1970-yadii, iyadoo ay ugu wacan tahay xaddidaadda xaaladaha taariikheed ee wakhtigaas, horumarinta tignoolajiyada PCB waxay ahayd mid gaabis ah, taas oo ka dhigtay dhammaan tignoolajiyada wax-soo-saarka inay ka dambeeyaan heerka sare ee waddamada shisheeye.

Sannadihii 1980-aadkii, khadadka wax-soo-saarka PCB-ga ee hal-dhinac ah, laba-geesoodka ah iyo lakabka badan ayaa laga soo saaray dibadda, taas oo wanaajisay heerka tignoolajiyada wax soo saarka ee PCB ee Shiinaha.

Sagaashameeyadii, shirkado soo saara PCB-ga ajnabiga ah sida Hong Kong, Taiwan iyo Japan ayaa u yimid Shiinaha si ay u dhisaan shirkado wadaag ah iyo warshado ay wada leeyihiin, taas oo ka dhigaysa wax soo saarka iyo tignoolajiyada Shiinaha ee PCB in ay horumariyaan.

Sannadkii 2002, waxay noqotay soo saaraha saddexaad ee PCB-ga.

2003, qiimaha wax soo saarka PCB iyo soo dejinta iyo dhoofinta labaduba waxay dhaafeen US $6 bilyan, taas oo dhaaftay Maraykanka markii ugu horeysay oo ay noqoto soosaarka labaad ee PCB ee adduunka.Saamiga qiimaha wax soo saarka PCB wuxuu ka kordhay 8.54% 2000 ilaa 15.30%, ku dhawaad ​​labanlaabmay.

Sannadkii 2006, Shiinuhu wuxuu u beddelay Japan oo ah saldhigga wax soo saarka PCB ee ugu weyn adduunka iyo waddanka ugu firfircoon horumarinta tignoolajiyada.

Sanadihii la soo dhaafay, warshadaha PCB ee Shiinaha ayaa sii waday heerka kobaca degdega ah ee ku saabsan 20%, aad uga sarreeya heerka kobaca ee warshadaha PCB caalamiga ah.Laga soo bilaabo 2008 ilaa 2016, qiimaha wax soo saarka ee warshadaha PCB ee Shiinaha ayaa ka kordhay US $ 15.037 bilyan ilaa US $ 27.123 bilyan, iyadoo korodhka kobaca sanadlaha ah ee 7.65%, taas oo aad uga sareysa 1.47% heerka kobaca iskudhafka caalamiga ah.Xogta Prismark waxay muujineysaa in sanadka 2019, qiimaha wax soo saarka PCB-ga caalamiga ah uu yahay ilaa $61.34 bilyan, kaas oo qiimaha wax soo saarka Shiinaha ee PCB uu yahay $32.9 bilyan, taasoo ka dhigan qiyaastii 53.7% suuqa adduunka.