Bio based polyamide PA56 material is mainly polymerized from bio based pentanediamine and petroleum based adipic acid or bio based sebacic acid, so the bio based content can reach up to 47% or 100%. The CO2 emissions are 44.2% and 50.4% of traditional petroleum based nylon 6 and nylon 66, respectively, effectively reducing carbon emissions and complying with the concept of sustainable development.