FELLAR 減速機型號:TH1 TH1HC TH2 TH2HS TH2HCTH3 TH3HS TH3HC TH4 TH4HS TH4HC2.行星減速機型號PHT2 PHT2-B PHT2-H PH2 PH2-B PH2-H PH2-