Hon Hai Precision Industry Co., Ltd. (TSEC:2317) is set to offer to invest about ¥700 billion in Sharp Corporation (TSE:6753), the Yomiuri daily reported, upping its proposal and sending shares in the troubled Japanese display maker soaring. Hon Hai, also known as Foxconn, could make the offer, its final proposal, as early as Friday, the Japanese newspaper said on Friday. It had previously proposed a maximum ¥500 billion investment, the Yomiuri said.