The present invention is a method and apparatus for a very low profile ball grid array package. The color matching profile generating device can use an input device profile and an output device profile, in addition to a color conversion profile which defines color conversion characteristics in an absolute color space and generates a color matching profile for the input device and the output device. A first current mirror is coupled between the second node of the resistor and the emitter of the second transistor, the second transistor being used for replicating bias conditions of the first transistor. , and having no alkenyl groups, SiH-functional crosslinking agent, hydrosilylation catalyst, and from 3 to 90 parts by weight of filler whose BET specific surface area is at least 50 m2g. The above process is capable of producing bisphenol A at high conversion and selectivity by suppressing deterioration of catalytic activity due to methanol as an impurity in acetone.