A optical disc holder and protector designed to retain a disc and remain thereon when the disc is inserted into a standard disc playerrecorder so as to maintain protection of the disc and allow the disc to be utilized in the playerrecorder. An ITS comprising a client system having an Internet browser, and a server hosting a Web site, wherein a message is transmitted from the server to the client system based on the user’s status with respect to Web site, the user seeking to establish a voice communication session. The material can be used in a variety of different applications including, for example, internal engine combustion, natural gas combustion, water purification or the like. The locating part is located in front of the front shell with a distance therebetween being adjustable by the locating part along with the slide part sliding forward and backward. An actuator speed regulating module is provided to drive the actuator at a first speed when the pump unit is turned on, and to continue to drive the actuator at a second speed higher than the first speed after a load on the actuator reaches a predetermined level.