Why these numbers
JAYO PLA Matte starts from Bambu's PLA Basic reference; JAYO's published specs are overlaid where available, and everything else stays at Bambu's calibrated default.
TDS: density 1.30; HDT 53; modulus 4780 MPa (highest in PLA range)
Treat these as a starting point — run a flow-test cube and Bambu's Flow Dynamics calibration after import for the last few percent.