Abstract: A semiconductor device includes a gate structure on a substrate, a first spacer on a sidewall of the gate structure, a second spacer on a sidewall of the first spacer, a third spacer on a sidewall of the second spacer, and first and second stacks of an epitaxial layer and a cap layer respectively disposed at first and second sides of the gate structure. Preferably, a part of the second spacer comprises an I-shape, the cap layer includes a planar top surface and an inclined sidewall, the cap layer contacts the second spacer and the third spacer directly, and the cap layer includes a vertical sidewall connected to the inclined sidewall.

Abstract: A water valve body includes a filter valve and a lower solenoid valve seat, both of which are integrally formed of plastic. The filter valve, as well as the lower solenoid valve seat, has an internal channel connecting an inlet end and an outlet end. The outlet end of the filter valve is connected to the inlet end of the lower solenoid valve seat, with a packing or a sealing element provided at the connecting position. In contrast to the conventional water valve body that is integrally formed of metal, this plastic-made water valve body is free of pollution associated with the leaching of heavy metals and incurs lower material cost. Besides, the plural components of the water valve body are selectively replaceable when damaged and thus also incur lower maintenance cost.