From my infos.fyi.
1.prepare records for board meeting about setting up auditing team of company debets
2.do auditing about how many debets like suppliers bills. rental.staffs compensation
3.notice in public media like newspaper
4.clean social cost
5.after30days notice in public.you can apply closing from tax bureau first.
6.you can apply to cancel your business licence in register office if there is no legal issue like legal case from suppliers or labor case like social cost and compensation issue.