Collagen yog cov protein ntau tshaj plaws hauv lub cev, thiab gelatin yog daim ntawv ua tiav ntawm collagen.Yog li ntawd, lawv muaj ntau yam khoom thiab cov txiaj ntsig.Txawm li cas los xij, lawv cov kev siv thiab kev siv sib txawv heev.Yog li ntawd, lawv yuav tsis siv interchangeably thiab koj yuav tau xaiv ib tug los yog lwm yam depen ...
Nyeem ntxiv