Natec's rhymes with:
latex, playtex, adaptec's, ameritech's, ametek's, armtek's, audiotex, avtex, aztecs, biotechs, centex, cytotechs, discotheques, entex, equitex, eyetech's, gatx, genentech's, gtech's, intex, kaisertech's, latex, memtec's, metex, pillowtex, playtex, portec's, qintex, railtex, scitex, symantec's, syntex, trintex, ventritex, vertex, videotex, wedtech's, westtech's
Natec's sounds like:
nadgwick, nadja, nantes, nantz, natasha, natasha's, natchez, natchez', natchez's, natick, nato's, nats, natsios, natzke, nautica, ned's, neddick, needs, neidigh, neitz, neitzke, nematodes, nemetz, nemitz, nendick, nets, netz, newedge, newmont's, newt's, newts, niedzwiecki, nieto's, nietzsche, nimitz, nimtz, nineties, nineties', ninety's, ninths, nitka, nitsa, nitsch, nitsche, nitschke, nitz, nitza, nitza's, nitze, nitzsche, nodes, nods, nomad's, nomadic, nomads, nominates, nontoxic, nonwhites, notch, notches, note's, notes, notes', notice, notices, notis, nots, nottage, notz, nowadays, nudes, nudge, nudges, nut's, nuts