| Message: | 3 manufacturers made samples for a hydraulic cartridge relief valve but all failed. AAK solved the problem in the first time, and the cylindricity is within 0.002mm, and the hole accuracy is H7. 1 month after Juan received the samples of AAK hydraulic cartridge relief valve, he sent an order for hydraulic cartridge relief valve worth 12,000 dollars.
The processing of high-precision hydraulic cartridge relief valve, the stability of its accuracy, and the processing efficiency have been criticized by highly demanding customers. Although there are more than 200 hydraulic valve manufacturers in Ningbo that can produce hydraulic cartridge relief valves, there are too many problems from samples to mass production. Although Juan from Argentina is an experienced purchaser, he has suffered 3 losses in selecting high-precision hydraulic cartridge relief valve manufacturers. 3 cartridge valve manufacturers took more than 6 months to make samples, but no one succeeded.
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