Abstract: A shower head structure and a plasma processing apparatus are provided. The shower head structure includes a plate body with a first zone and a second zone on a first surface. A plurality of first through holes are in the first zone, each of the first through holes having a diameter uniform with others of the first through holes. A plurality of second through holes are in the second zone. The first zone is in connection with the second zone, and the diameter of each of the first through holes is greater than a diameter of each of the second through holes. A plasma processing apparatus includes the shower head structure is also provided.

Abstract: A mailbox assembly having a mounting plate for securing the mailbox assembly into the ground. The mounting plate has three primary configurations: a flat configuration for use on a generally flat ground surface; a bent configuration for use on the edge of a hill; and an angled configuration for use on a hill. The mailbox assembly is adjustable horizontally, vertically, pivotally, and angularly.