Our company received an important order on September 10th, and the customer specified the need for 4 DN25 specification, 316L material diaphragm direct mounted diaphragm pressure transmitters with a range of -0.1~0MPa. Considering the small range of this order and the relatively small diameter of the DN25 flange diaphragm, in order to ensure that the product quality meets the high standard requirements of the customer, the company has adopted a special process for production. We have specially carried out high and low compensation processing and conducted strict aging re calibration testing after the product is completed. After a series of meticulous operations, we successfully achieved the 0.2% high-precision standard required by the customer, fully demonstrating the outstanding technical and quality capabilities of Qingchuan Instruments.