Disclosed are an epoxy compound having an alkoxysilyl group, a composite of which exhibits good heat resistant properties andor a cured product of which exhibits good flame retardant properties, a method of preparing the same, a composition comprising the same, and a cured product and a use of the composition. The door skins are positioned by flange ribs of the left angle bar. Alternatively, an error correction code is used after a first reading of data to identify erroneous data. The second device includes a processor that is adapted to execute a computer program that requires data to be transferred to the processor at a second rate which is lower than the first rate. The controller has a setting section that sets the upper limit speed.