Three-extractor in series working mode (R101→R102→R103 as an example) Take R101 → R102 → R103 three-extractor in series work as an example to introduce the operation process. The series operation of R102→R103→R101 and the series operation of R103→R101→R102 are the same as the series operation of R101→R102→R103. However, the valve is different from the operation […]