3 Rongyu Group Co.Ltd(002622) 021 R & D investment increased by 50%. The company’s salt lake lithium extraction technology is expected to carry out pilot test of the project this year

Safbon Water Service (Holding) Inc.Shanghai(300262) recently released annual report shows that in 2021, the company invested 38.55 million in R & D, an increase of 51.06% over 25.52 million in 2020, accounting for 28.30% of revenue. R & D investment increased, and the main companies developed high-strength nano ceramic flat ultrafiltration membrane. It is reported that Safbon Water Service (Holding) Inc.Shanghai(300262) ‘s submerged flat ceramic membrane can solve the core separation technology of lithium extraction from Salt Lake and improve the stability and output of lithium extraction from salt lake. The technology is expected to be pilot tested in 2022.