Why these numbers
Polymaker PolySonic PLA starts from Bambu's PLA Basic reference; Polymaker's published specs are overlaid where available, and everything else stays at Bambu's calibrated default.
Dual-mode TDS: classic 190–210 °C @ 50–100 mm/s; high-speed 210–230 °C @ 100–300 mm/s
Treat these as a starting point — run a flow-test cube and Bambu's Flow Dynamics calibration after import for the last few percent.