That means you can do 2 stopover between SFO and TPE r/t. There is usually a restriction as to where and how and whether it is free.
The detailed rule is the following:
2 STOPOVERS PERMITTED ON THE PRICING UNIT - 1 IN EACH DIRECTION AT USD 300.00 EACH NONE IN GUAM
You also need to check transfer rules
5 TRANSFERS PERMITTED IN EACH DIRECTION. 2 PERMITTED IN AREA 1 IN EACH DIRECTION 3 PERMITTED IN AREA 3 IN EACH DIRECTION. FARE BREAK SURFACE SECTORS NOT PERMITTED AND EMBEDDED SURFACE SECTORS PERMITTED ON THE FARE COMPONENT.
And routing rules
/VIA THE PACIFIC/ MAP CONSTRUCTED LEFT TO RIGHT AND RIGHT TO LEFT 1. SFO-DEN/LAX/SEA/SFO/SJC-HNL/ITO/KOA/LIH/OGG-AS/HA/UA-ITO/ JHM/KOA/LIH/LNY/MKK/OGG-AS/HA/UA-HNL-GUM-3K/7C/BR/CX/GA/ GK/HX/MH/NH/OD/OZ/PR/SQ/UA/VN-HKG/MNL/SEL/SIN/TPE-3K/7C/ BR/CX/GA/GK/HX/MH/NH/OD/OZ/PR/SQ/UA/VN-TPE 2. SFO-DEN/LAX/SEA/SFO/SJC-HNL/ITO/KOA/LIH/OGG-AS/HA/UA-ITO/ JHM/KOA/LIH/LNY/MKK/OGG-AS/HA/UA-HNL-GUM-3K/7C/BR/CX/GA/ GK/HX/MH/NH/OD/OZ/PR/SQ/UA/VN-TPE 3. SFO-DEN/LAX/SEA/SFO/SJC-HNL/ITO/KOA/LIH/OGG-AS/HA/UA-ITO/ JHM/KOA/LIH/LNY/MKK/OGG-AS/HA/UA-HNL-NH/UA-SFO-OSA/TYO-NH/ UA-OSA/TYO-3K/7C/BR/CX/GA/GK/HX/MH/NH/OD/OZ/PR/SQ/UA/VN- HKG/MNL/SEL/SIN/TPE-3K/7C/BR/CX/GA/GK/HX/MH/NH/OD/OZ/PR/ SQ/UA/VN-TPE 4. SFO-DEN/LAX/SEA/SFO/SJC-HNL/ITO/KOA/LIH/OGG-AS/HA/UA-ITO/ JHM/KOA/LIH/LNY/MKK/OGG-AS/HA/UA-HNL-NH/UA-SFO-OSA/TYO-NH/ UA-OSA/TYO-3K/7C/BR/CX/GA/GK/HX/MH/NH/OD/OZ/PR/SQ/UA/VN- TPE 5. SFO-DEN/LAX/SEA/SFO/SJC-HNL/ITO/KOA/LIH/OGG-AS/HA/UA-ITO/ JHM/KOA/LIH/LNY/MKK/OGG-AS/HA/UA-HNL-NH/UA-SFO-OSA/TYO-NH/ UA-OSA/TYO-NH/UA-TPE 6. SFO-HNL/ITO/KOA/LIH/OGG-AS/HA/UA-ITO/JHM/KOA/LIH/LNY/MKK/ OGG-AS/HA/UA-HNL-GUM-3K/7C/BR/CX/GA/GK/HX/MH/NH/OD/OZ/PR/ SQ/UA/VN-HKG/MNL/SEL/SIN/TPE-3K/7C/BR/CX/GA/GK/HX/MH/NH/ OD/OZ/PR/SQ/UA/VN-TPE 7. SFO-HNL/ITO/KOA/LIH/OGG-AS/HA/UA-ITO/JHM/KOA/LIH/LNY/MKK/ OGG-AS/HA/UA-HNL-GUM-3K/7C/BR/CX/GA/GK/HX/MH/NH/OD/OZ/PR/ SQ/UA/VN-TPE 8. SFO-HNL/ITO/KOA/LIH/OGG-AS/HA/UA-ITO/JHM/KOA/LIH/LNY/MKK/ OGG-AS/HA/UA-HNL-NH/UA-SFO-OSA/TYO-NH/UA-OSA/TYO-3K/7C/BR/ CX/GA/GK/HX/MH/NH/OD/OZ/PR/SQ/UA/VN-HKG/MNL/SEL/SIN/TPE- 3K/7C/BR/CX/GA/GK/HX/MH/NH/OD/OZ/PR/SQ/UA/VN-TPE 9. SFO-HNL/ITO/KOA/LIH/OGG-AS/HA/UA-ITO/JHM/KOA/LIH/LNY/MKK/ OGG-AS/HA/UA-HNL-NH/UA-SFO-OSA/TYO-NH/UA-OSA/TYO-3K/7C/BR/ CX/GA/GK/HX/MH/NH/OD/OZ/PR/SQ/UA/VN-TPE 10. SFO-HNL/ITO/KOA/LIH/OGG-AS/HA/UA-ITO/JHM/KOA/LIH/LNY/MKK/ OGG-AS/HA/UA-HNL-NH/UA-SFO-OSA/TYO-NH/UA-OSA/TYO-NH/UA- TPE 11. SFO-LAX/SFO-DEN/LAX/SEA/SFO/SJC-HNL/ITO/KOA/LIH/OGG-AS/HA/ UA-ITO/JHM/KOA/LIH/LNY/MKK/OGG-AS/HA/UA-HNL-GUM-3K/7C/BR/ CX/GA/GK/HX/MH/NH/OD/OZ/PR/SQ/UA/VN-HKG/MNL/SEL/SIN/TPE- 3K/7C/BR/CX/GA/GK/HX/MH/NH/OD/OZ/PR/SQ/UA/VN-TPE 12. SFO-LAX/SFO-DEN/LAX/SEA/SFO/SJC-HNL/ITO/KOA/LIH/OGG-AS/HA/ UA-ITO/JHM/KOA/LIH/LNY/MKK/OGG-AS/HA/UA-HNL-GUM-3K/7C/BR/ CX/GA/GK/HX/MH/NH/OD/OZ/PR/SQ/UA/VN-TPE 13. SFO-LAX/SFO-DEN/LAX/SEA/SFO/SJC-HNL/ITO/KOA/LIH/OGG-AS/HA/ UA-ITO/JHM/KOA/LIH/LNY/MKK/OGG-AS/HA/UA-HNL-NH/UA-SFO-OSA/ TYO-NH/UA-OSA/TYO-3K/7C/BR/CX/GA/GK/HX/MH/NH/OD/OZ/PR/SQ/ UA/VN-HKG/MNL/SEL/SIN/TPE-3K/7C/BR/CX/GA/GK/HX/MH/NH/OD/ OZ/PR/SQ/UA/VN-TPE 14. SFO-LAX/SFO-DEN/LAX/SEA/SFO/SJC-HNL/ITO/KOA/LIH/OGG-AS/HA/ UA-ITO/JHM/KOA/LIH/LNY/MKK/OGG-AS/HA/UA-HNL-NH/UA-SFO-OSA/ TYO-NH/UA-OSA/TYO-3K/7C/BR/CX/GA/GK/HX/MH/NH/OD/OZ/PR/SQ/ UA/VN-TPE 15. SFO-LAX/SFO-DEN/LAX/SEA/SFO/SJC-HNL/ITO/KOA/LIH/OGG-AS/HA/ UA-ITO/JHM/KOA/LIH/LNY/MKK/OGG-AS/HA/UA-HNL-NH/UA-SFO-OSA/ TYO-NH/UA-OSA/TYO-NH/UA-TPE 16. SFO-OSA/TYO-NH/UA-OSA/TYO-3K/7C/BR/CX/GA/GK/HX/MH/NH/OD/ OZ/PR/SQ/UA/VN-HKG/MNL/SEL/SIN/TPE-3K/7C/BR/CX/GA/GK/HX/ MH/NH/OD/OZ/PR/SQ/UA/VN-TPE 17. SFO-OSA/TYO-NH/UA-OSA/TYO-3K/7C/BR/CX/GA/GK/HX/MH/NH/OD/ OZ/PR/SQ/UA/VN-TPE 18. SFO-OSA/TYO-NH/UA-OSA/TYO-NH/UA-TPE