You’re all feeling the impact, not just of China, but a very complex plastics/resin supply chain affected by the following: early Covid (reduction of demand forecasted, thus plants limited their output), mid/late 2020 Covid (home improvement picks up, new home construction, demand skyrockets) 2021 Texas Freeze (pipes burst at refining facilities at unprecedented levels, reducing supply dramatically), coupled with increase demand for your products at hospitals and the entire supply chain wanted safety stock (hoarding), and continued demand outside of medical for these same resins (home building, home reno, consumer goods, etc).
The Texas freeze impact cannot be glossed over as it there are a lot of precursor steps to the refining process and it takes more time than expected to restart the lengthy process.