A system, method and computer program product are disclosed for normalizing data in a supply chain management framework. When fuel vapor absorbed by the canister is purged, the opening of the throttle valve is reduced, and the canister is made to communicate with the upstream side of the compressor. It also provides, in response to the user querying the knowledge database, an interface to the user for the user to enter a service request. Parasitic capacitance is thus greatly reduced and signal propagation speeds improved. 2{T*PLED}2\u22122{T*PLED}+105 mm and a second equation: A=0. The driving module generates a driving signal having the driving frequency, and sends the driving signal to the touch panel.