Abstract: An assembly/disassembly pliers including two pivoted pliers bodies is used to assemble or disassemble a heat sink on or from a chip. The heat sink is disposed in a fixing member, and two hooks of the fixing member are buckled with the chip. An actuating handle and an operating board are respectively disposed on each pliers body, and a bump is extended from at least one operating board. The two actuating handles are actuated to drive the two operating boards to open towards opposite directions, such that the bumps push the fixing member and release the hooks, such that the fixing member and the heat sink are installed on or separated from the chip.

Abstract: A filtering assembly for the reverse osmosis water treatment system is disclosed herein. The filtering assembly encloses the membrane unit in an air-tight space formed by a membrane unit cover and a membrane unit housing, both of which could be screwed together and separated apart easily by an ordinary person without using special tools. After the membrane unit is replaced, the original membrane unit cover and housing are re-used to house the new membrane unit. The filtering assembly arranges its tubular connectors for the pipelines at various vertical and horizontal locations so that their connections wouldn't interfere with each other. Additionally, together with the design of separate membrane unit cover and housing, the pipelines could be installed only once and the replacement of the membrane unit requires no disconnecting and re-connecting the pipelines.

Abstract: A water filter includes a housing, a base adapted to engage with a lower end of the housing, two filtering cores each having a cylindrical casing threadedly connected with an upper circular cover and a lower circular cover, the lower circular cover having a threaded circular shoulder depending downwardly therefrom and a tubular neck having an upper end extending upwardly from the threaded circular shoulder and a lower end extending downwardly from the threaded circular shoulder, a first seat formed with an inner neck and an outer neck and arranged in a respective recess of the base, and a second seat formed with an second inner neck and an second outer neck and fitted into a respective recess of the base, whereby the water filter will provide two circulation cycles for purifying water.