Never buy from Alibaba or Lishui City Yongrun Precision Machinery Co.
They dont respect customer interest, they just take your money and when you loose your package... Good luck if you can get anything out of them. USA customer for them is a $$$$$$ source only. They have no rules for customer satisfaction or customer appreciation, I bought $800 worth of material and when received I was missing 6 pieces for $50... it has been 67 days trying to get those pieces... and dont think I will get them... they dont speak english well and they dont understand you well, even the Trade assurance who should be english speakers. Also they dont. And you will drwon in a chinese ocean where you can communicate and at the end you give up...