Since the early 90's of the 20 century, Hoiho has started study Lead Free PCB fabrication.
We made the first lead-free board in electrolytic gold process.

In 1999 ,Hoiho succedded in setting up an OSP ( Entek ) and Immersion Gold line.

In 2004, protyotype of both immersion silver and lead-free HAL passed the qualification. The production ramped up to high volume thereafter.

In 2007, Immersion Tin line installed.

Product of Halogan Free PCB started in 2002.