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2022-03-02
The Thickness of Horizontal Spray Tin is Divided Into Three Types: 2.54mm(100mil), 5.08mm(200mil), 7.62mm(300mil), the thickness of tin can be measured by micro-slicing: after fine polishing, […]
2022-03-02
Pre-Cleaning Treatment: It is mainly to clean the copper surface by micro-etching. The depth of micro-etching is generally 0.75-1.0 microns. At the same time, the attached […]
2022-03-02
As one of the most common surface coating forms for circuit board surface treatment, tin spray (SMOBC & HAL) is widely used in circuit production. The […]
2022-03-01
Causes and Elimination of Faults in PCB Electroplating Nickel Process: a) Makeng: Makeng is the result of organic pollution. Large hemp pits usually indicate oil contamination. […]
