Many people ask why the raw materials will rise wildly? First, the relationship between supply and demand determines the price. During the epidemic, countries lockdown and production capacity declines; second, currency depreciation causes global inflation and prices rise. When central banks print banknotes, banknotes will depreciate when they reach a certain level. The renminbi is currently appreciating against the U.S. dollar, but it is actually depreciating at home. Third, international crude oil prices are the basis for bulk commodity transactions. As long as the price of crude oil rises, all kinds of raw materials Will rise. Remember the U.S. crude oil price fell to a negative number from April to May last year? Now a barrel has passed 60 dollars. As such, this raw material will continue to rise until the economic bubble bursts. We are manufacturer of bopp packing tapes , the price rises very much from 2021 . Such as bopp tape jumbo roll , stretch wrapping film , masking tape and so on . Please learn more about us on our web : ys-packingtape.goodao.net