Custom manufacturing at the order and specification of others, namely, photoresist and etch services, for the manufacture of photomasks; custom manufacturing at the order and specification of others, namely, photoresist and etch services, for the optical transfer of integrated circuit images onto semiconductor wafers; custom manufacturing at the order and specification of others, namely, photoresist and etch services, for altering and blocking light as applied to photomasks; photolithography for the transfer of integrated circuit images onto various substrates, namely, semiconductor wafers, GaAs wafers, III-V compound wafers, quartz, and glass