Pneumatic discrage polo polo vale
Pneumatic discrage polo polo vale
1,Mamanuina ma gaosia: GB / T12237-1989;
2, asiasiga ma tofotofoga: GB / T13927-1992;
3 ,FLanged sootaga: GB / T9115.1-2000.
4,Foliga-foliga foliga: JD-2002.
Tusi lau feʻau iinei ma lafo mai ia i matou