When the public security organ investigated the case, four relevant parties, namely, two former cooperation companies, the chairman of one of the two companies and the jointly-established hotel company, signed an "agreement" over problems in the case.
公安机关对案件进行侦查的阶段,昔日的两个合作公司以及一方公司的董事长、共同开发的酒店公司,四方“当事人”就案件中涉及的问题签订“协议书”。