Profile: ShenZhen Victory Electronic Technology Co., Ltd. is a PCB manufacturer which is specialized manufacturer for multiply species, small to medium series, and quick turn production. Heavy copper printed circuit boards are widely used in various electronic industries. Heavy copper PCB has another name, thick copper PCB, containing more than 3 ounces (oz) of copper on the inner or out layers of printed circuit boards. The circuit board with a copper thickness from 4 oz/ft2 to 20 oz/ft2 is also considered heavy copper PCB, while copper weights above 20 oz/ft2 and up to 200 oz/ft2 are referred to as extreme copper.