Salve Mr Xiong! Rogo licet quantum societas vestra in R&D quotannis collocat et quam proportionem reditus sui rationem habeat?

Optoelectronics crystallinis: Salve: societas R&D obsidendi pro 5.28%, 6.48%, et 6.41% vectigalium operandi in 2019, 2020, et 2021 respective. Gratias!