What is the approximate profit of government bidding and procurement of RFQ bids? (System integration direction.)

China's "Government Procurement Law," Article 26 provides: "Government procurement using the following methods: one open bidding; two invitation to bidding; three competitive negotiations; four single-source procurement; five request for quotations; and six the State Council supervision and management department of government procurement identified other procurement methods. Open tendering shall be the main procurement method for government procurement." Here the state council government procurement supervision and management department can identify other procurement methods, mainly for small purchases, for the purchaser to understand the market conditions of the procurement, the purchaser can be directly purchased, for those who do not know, can be through the form of verbal quotations, quickly and conveniently determine the supplier, to minimize the transaction costs to complete the procurement activities. So choose A