Secondly for the bidding we explain the Procurement bidding procedures and several methods : single-source procurement inquiry procurement selective bidding two-stage bidding negotiation procurement seeking advice procurement and competitive bidding purchasing .

其次，针对招标采购，阐述招标采购的程序以及招标采购的几种方法：单一来源采购、询价采购、选择性招标采购、 两 阶段 招标 采购、谈判采购、征求意见采购及竞争招标采购。