Abstract: A fixing means for a heat dissipater is provided to position the heat dissipater and a heat-generating element, which includes a heat-dissipating base and a positioning frame. The surface of the heat-dissipating base is provided with a plurality of heat-dissipating pieces. The center of the plurality of heat-dissipating pieces is provided with a sliding groove. Further, the positioning frame is formed into a T-lettered shape and constituted of a transverse rod and a pressing end. The pressing end is accommodated in the sliding groove of the base to abut against the surface of the base. Both side faces of the transverse rod are provided with a screw hole, respectively, for receiving a locking element.

Abstract: A pipe trap comprising a body, a disc filter, a pipe and a plurality of mesh filter suitable for filtering gases is provided. The pipe trap body has a gas inlet and a gas outlet. The disc filter and the mesh filters are enclosed inside the pipe trap body. One end of the pipe connects with the disc filter and the other end of the pipe connects with the gas outlet. The mesh filters are enclosed inside the pipe. Using a multi-stage filtering method, liquid matter separates out first and then gaseous particles are filtered according to the particle size so that the pipe trap has a high filtering efficiency.

Abstract: This application discloses a process for manufacturing glycidol and, if desired, glycerol, by epoxidizing allyl alcohol with a 5 to 40% solution of peracetic acid in a substantially anhydrous, inert, organic solvent to produce glycidol in high yield and purity. Formation of by-products is minimized by rapid removal of co-product acetic acid. The glycidol can then be hydrolyzed to form a readily purifiable glycerol.

Abstract: This application discloses a process for manufacturing glycidol, and, if desired, glycerol, by epoxidizing allyl alcohol with a 5 to 40% solution of peracetic acid in a substantially anhydrous, inert, organic solvent to produce glycidol in high yield and purity. Formation of by-products is minimized by rapid removal of co-product acetic acid. The glycidol can then be hydrolyzed to form a readily purifiable glycerol.