Abstract: The disclosure provides a polyester composite board structure and a manufacturing method thereof. The manufacturing method includes extruding a polyester layer into a board using a multi-layer extrusion equipment, and laminating a polyester film by heat using a wheel during an extrusion process.

Abstract: A computer system for integrating several car electronic devices is proposed. The computer system is installed in a housing, which is of the standard DIN size to be installed in a car dashboard. A computer host is disposed in the housing, and can run at least an operating system or at least a software program. At least an external electronic device is connected to the computer host through a plurality of connection ports disposed on the computer host. A control panel is disposed at the front end of the housing to control the computer host. A display for displaying text or picture information is also connected to the computer host. A touch panel adhering to the display is also provided. Data can be input through contacting the touch panel. The connection ports can connect all electronic devices in a car for integrating and controlling them.

Abstract: A computer system for integrating several car electronic devices is proposed. The computer system is installed in a housing, which is of the standard DIN size to be installed in a car dashboard. A computer host is disposed in the housing, and can run at least an operating system or at least a software program. At least an external electronic device is connected to the computer host through a plurality of connection ports disposed on the computer host. A control panel is disposed at the front end of the housing to control the computer host. A display for displaying text or picture information is also connected to the computer host. A touch panel adhering to the display is also provided. Data can be input through contacting the touch panel. The connection ports can connect all electronic devices in a car for integrating and controlling them.

Abstract: A computer system for integrating several car electronic devices is proposed. The computer system is installed in a housing, which is of the standard DIN size to be installed in a car dashboard. A computer host is disposed in the housing, and can run at least an operating system or at least a software program. At least an external electronic device is connected to the computer host through a plurality of connection ports disposed on the computer host. . A control panel is disposed at the front end of the housing to control the computer host. A display for displaying text or picture information is also connected to the computer host. A touch panel adhering to the display is also provided. Data can be input through contacting the touch panel. The connection ports can connect all electronic devices in a car for integrating and controlling them.

Abstract: A wheel of a rack consists of a wheel support, a sleeve inserted into a tube of a rack, a supporting member joined to both the sleeve and a top of the wheel support, and a screw projecting from the supporting member and screwed into the sleeve; a step-shaped portion being formed on top of the supporting member to fit with a cavity on the sleeve bottom; a resilient C-shaped ring being fitted around an annular groove of the sleeve to contact an inner side of the tube; the groove being shaped so that a sideways facing portion thereof tapers off towards a lower end; thus, the ring will move to the bigger upper section of the sideways facing annular portion to be pressed against the inner side of the tube with bigger pressure when a downward force is applied on the sleeve.

Abstract: A wheel of a rack consists of a wheel support, a sleeve inserted into a tube of a rack, a supporting member joined to both the sleeve and a top of the wheel support, and a screw projecting from the supporting member and screwed into the sleeve; a step-shaped portion being formed on top of the supporting member to fit with a cavity on the sleeve bottom; a resilient C-shaped ring being fitted around an annular groove of the sleeve to contact an inner side of the tube; the groove being shaped so that a sideways facing portion thereof tapers off towards a lower end; thus, the ring will move to the bigger upper section of the sideways facing annular portion to be pressed against the inner side of the tube with bigger pressure when a downward force is applied on the sleeve.

Abstract: A computer system for integrating several car electronic devices is proposed. The computer system is installed in a housing, which is of the standard DIN size to be installed in a car dashboard. A computer host is disposed in the housing, and can run at least an operating system or at least a software program. At least an external electronic device is connected to the computer host through a plurality of connection ports disposed on the computer host. A control panel is disposed at the front end of the housing to control the computer host. A display for displaying text or picture information is also connected to the computer host. A touch panel adhering to the display is also provided. Data can be input through contacting the touch panel. The connection ports can connect all electronic devices in a car for integrating and controlling them.

Abstract: A lubricating device for four-stroke engine consists of a cylinder block, a crankcase, an oil sump, a piston, a crankshaft, a connecting rod and an oil dipper, the crankcase contains an upper crankcase body and a lower crankcase body, the bottom of the crankcase extends downward to form an oil trough with a hole in it, an oil dipper is able to operate in the oil trough, an oil box is formed for oil containing by the lover crankcase body and the oil sup, when an engine is running on a normal inclination, a shall amount of oil can only get into the oil trough through three hole in it, movement of the oil dipper atomizes the oil to provide lubrication, if the engine is running on an abnormal inclination or bumping condition, oil will not flow into the crankcase, and this design is able to ensure nor-al operation of an engine on any inclinations.