QUALITY CONTROL

We strong commitment to provide the best quality to our customers, to meet this commitment, YOULI has been pushing high-quality policy of processing. We care every small part of key, to ensure our quality from incoming to delivery all under control.

Incoming Quality Control

Check each spare part

Check the Diameter of O-ring

Temperature Test

(Keep 100 degrees Celsius for 72 Hours)

Dimension Projector

Test dimension of spool

Hardness tester

(Test the hardness of spool (HRC STANDARD)

Mechanical Hardness Tester

Test hardness of valve body (HB STANDARD)

Roundness tester

Roundness test of spool

Test surface roughness of spool

In-Process Control

Check inside edge of valve body

Make sure of assembly smoothly

Make sure operating smoothly

After parts are honed, our technician inspects the whole accuracy by using the sophisticated air gauge

Final Quality Control

Delivery Quality Control

Check full functions on testing machine