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เราใช้คุกกี้เพื่อพัฒนาประสิทธิภาพ และประสบการณ์ที่ดีในการใช้เว็บไซต์ของคุณ คุณสามารถศึกษารายละเอียดได้ที่ นโยบายความเป
Q345d round bar with small temperature impacting check 40cr round bar,steel bar 40cr,40cr steel rod is Chromium alloy round steel materials.Hot rolled steel bar 40Cr tolerance in diameter and length,weight shall be comply to specification GB/T 702.Each rounds and coins start off as molten silver and that is poured into an ingot. The ingot is shippe
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