Selon dènye tandans gwo tandans yo (Flocontrol, Haimita, Trueline Valve, Kirloskar Brothers, elatriye), mache valv boul espiral la pral segmenté epi analize pa devlopman ak kwasans gwo rejyon yo an 2020.
"Dapre rapò nou an, konpare ak 2018, mache valv boul filete a te grandi an 2019. Akòz rediksyon depans endistri a ak demann ki fèb apre epidemi Covid-19 la, mache valv boul filete a gen chans pou ralanti an 2020. Anplis de sa, Apati 2021,..."
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