Description
The material used in PCB from top to bottom includes Silkscreen, Soldermask, Copper and Substrate. The last of those layers, substrate, is made of fiberglass and is also known as FR4, with the FR letters standing for “fire retardant.”








Nuts, Bolts and Screws
9V Battery - HIW
1KVA UPS with battery
Reviews
There are no reviews yet.