Abstract: A carrier includes main body, a conductive elastic element, and a handle. The main body is adapted to carrying an electronic device and has a cavity. The conductive elastic element is disposed in the cavity. The handle is pivotally coupled to the main body. When the handle locks the main body to be located in a lock position, the handle exerts force on the conductive elastic element such that the conductive elastic element protrudes outside the main body through the cavity. When the handle does not lock the main body and exert force on the conductive elastic element to be located at a release position, the conductive elastic element is located inside the main body where it does not interfere with an outside device. This allows convenient insertion and removal of the carrier relative to a cage. Accordingly, the conductive elastic element is not damaged easily.

Abstract: The present invention relates to a modified Raney nickel catalyst which can serves as hydrogenation catalyst for hydroxy aldehydes, such as 4-hydroxy-butanal, and 2-methyl-3-hydroxypropanal and hydroxy cyclic ethers such as 2-hydroxy-tetrahydrofuran. Further, a process for preparing diols by using the modified Raney nickel catalyst is provided.

Abstract: The invention disclosed a two-head one-cubican drawing system provided with two sets of drafting mechanisms and two coilers. A cubic can is used to receive slivers from two coilers so as to decrease the space occupied by the system and facilitate the arrangement of automatic transportation. Through the control of driving mechanisms by transverse devices, evener drawing frames, and rollers the system can have two slivers equally formed in the cubic can.