The opening and closing characteristics can reach 95% opening rate and 90% closing rate, the operating pressure swing is not greater than ± 0.1MPa, and the design service life is more than 1 million times. For this high precision, high stability and high durability 3-high hydraulic threaded cartridge valve, Jacob is surprised that the AAK hydraulic valve is successful in one-time sample, while most hydraulic valve manufacturers are not able to do at all. Jacob is a purchaser of Intermot company in Italy. The company has a newly developed hydraulic motor, which needs to use hydraulic threaded cartridge valve. This motor is a high-frequency operation and has strict requirements for various parameters, especially for the parameters of hydraulic threaded cartridge valve, which has 3 high requirements of high accuracy, high stability and high durability. The owner asked Jacob to complete the procurement of this batch of hydraulic threaded cartridge valves within 60 days. He selected 4 from the original hydraulic valve suppliers to make samples. After installation, it was found that the opening and closing characteristics of hydraulic threaded cartridge valves can only reach 90% opening rate and 85% closing rate, which is 5% lower than the parameter requirements. Even the operating pressure swing of some hydraulic threaded cartridge valves exceeds 0.2MPa. In the last step testing, only 2 or 3 samples can be intact after 1 million durability tests. If all three requirements should be reached at the same time, nearly none of the samples meet the standard. Due to the limitation of equipment, the original manufacturer said it was difficult to improve significantly. Jacob learned about AAK hydraulic valve under the introduction of its peers. After browsing AAK website (www.aakindustry. com), he felt that the AAK hydraulic threaded cartridge valve might help him. After receiving the parameter requirements and drawings of his hydraulic threaded cartridge valve, we found that the requirements of this hydraulic threaded cartridge valve are not simple, but our technical team needs to chew this hard bone and gave reply to Jacob that if it goes well, the samples of the hydraulic threaded cartridge valve can be sent within 20 days. On the contrary, it needs more time for proofing. Jacob hopes that AAK hydraulic threaded cartridge valve sample will be successful, which just meets the delivery time required by the owner. After 15 days, AAK sent the hydraulic threaded cartridge valve samples successfully. After installation and test by the engineer, all parameters of the hydraulic threaded cartridge valves are qualified and meet the 3 high requirements of high accuracy, high stability and high durability. After 25 days, the shipment of the hydraulic threaded cartridge valve was delivered as scheduled.