Ngaphambi kweholide Losuku Lukazwelonke, ngaphansi kwethonya lokusimama komnotho okungekuhle, isimo esintekenteke sokuthengiselana ezimakethe kanye nesidingo esingazinzile, imakethe ye-PVC ayizange ibe ngcono kakhulu.Nakuba intengo iphinde yakhuphuka, yahlala isezingeni eliphansi futhi iguquguquka.Ngemuva kweholide, imakethe yesikhathi esizayo ye-PVC ivalwa okwesikhashana, futhi imakethe yendawo ye-PVC isekelwe ikakhulukazi ezintweni zayo.Ngakho-ke, ngokusekelwa yizinto ezifana nokukhuphuka kwentengo ye-calcium carbide eluhlaza kanye nokufika okungalingani kwezimpahla esifundeni ngaphansi kokuvinjelwa kwezinto zokuhamba nezokuthutha, intengo yemakethe ye-PVC iqhubekile nokukhuphuka, ngokunyuka kwansuku zonke.Ku-50-100 yuan / ton.Izintengo zokuthumela zabahwebi zinyusiwe, futhi ukuthengiselana kwangempela kungaxoxisana.Nokho, i-downstream constructi...