Abstract: A composition and use thereof. The composition comprises an active component a and an active component b; the active component a is a compound as shown in general formula A; and the active component b is at least one of compounds which have insecticidal, acaricidal or bactericidal activity and are different from the compound as shown in general formula A. The composition has the advantages of synergistic effect and expanding prevention and treatment spectrum, and can be used for preventing and treating various pests, particularly mite damage, and plant diseases caused by various fungi, bacteria, nematodes and viruses.

Abstract: A multifunction digital versatile disc (DVD) expansion playback device combines a portable DVD player and a fixing base having functions of a peripheral together. The power of the DVD player comes from an external direct current (DC) power so that the DVD player can be used indoors, outdoors or in a car. Signals of the peripheral are received from the DVD player. The DVD player can also be taken out from the fixing base.