| Message: | The guard told me on Monday that there was an international parcel in the office. From the shipment airway bill, it was a sample of hydraulic valve block from an old American customer Zero. I was a little puzzled. Zero only purchases hydraulic cartridge valves from AAK. I didn't know why he sent me the hydraulic valve block sample until I read all the emails today.
Zero introduced in the email that he purchased this hydraulic valve block from a friend, the quantity was not big, just 100 pieces. The hydraulic valve block was easy to leak after being used for a period of time. He didn't know the source of the leak and asked me to help have a check. After the pressure test and inspection, our technician analyzed that the leakage was serious and the pressure could not reach the pressure value of the system. I told Zero that the original manufacturer of this hydraulic valve block judged that the hydraulic valve block was qualified without strictly controlling the data in the pressure test stage.
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