Laga soo bilaabo 2010 ilaa 2014, mugga dhoofinta PVC ee Shiinaha wuxuu ahaa qiyaastii 1 milyan oo tan sannadkii, laakiin laga bilaabo 2015 ilaa 2020, mugga dhoofinta PVC ee Shiinaha ayaa hoos u dhacay sannad kasta. Sannadkii 2020-kii, Shiinuhu waxa uu dhoofiyay ku dhawaad 800000 oo tan oo PVC ah, laakiin sannadkii 2021-kii, saamaynta faafitaanka adduunka awgeed, Shiinuhu waxa uu noqday waddanka ugu weyn ee wax dhoofiya PVC-ga, iyada oo mugga dhoofinta ahi ka badan tahay 1.5 milyan oo tan.
Mustaqbalka, Shiinaha ayaa wali ka ciyaari doona doorka ugu muhiimsan ee dhoofinta PVC ee caalamiga ah.