In bearing spring point is due bedspring of steel bar consolidate, the fabric of fixed bedspring should be corroded not easily and insipidity, enclothe the fabric on bedspring Alexandrine character.

 
  • 在承重彈簧處應有鋼條加固彈簧,固定彈簧的織物應不易腐蝕且無(wú)味,覆蓋在彈簧上的織物同上特性。
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