it is not appropriate to utilize large-torque and short lifetime traditional butterfly valve on air control.Traditional butterfly valve can not meet the demand for air control special in high temperature work environment. Li Jin have discovered needs for the industry, design director Mr. Liu Da Tan invent Oval Disk Damper(or called Air Control or Gas Control Butterfly Valve), can function oval disk close seal to valve seat. They are metal to metal contact, more tightly when more use. Li Jin Damper with Oval disk design , won patent in Taiwan ,U.S.A.,CHINA and Japan.
The purpose of Slider Kit is to gather common slideshow-like jQuery functionalities (such as news sliders, photos galleries/sliders, carousels, tabs menus)
When tracking mouse movement, you usually need to know the actual position of the mouse pointer. The event object that is passed to the handler contains some information about the mouse coordinates.