"Chinese people*** and the state bidding law", "Chinese people*** and the state bidding law implementation regulations", "construction project bidding agent contract (model text)", "construction project construction bidding methods" (seven ministries and commissions 30 decree), as well as the "standard construction bidding of building construction and municipal engineering prequalification documents" and "standard construction bidding of building construction and municipal engineering Bidding documents" and all other laws, administrative regulations, ministries and commissions, normative documents are not "cttj" these symbols.
"cttj" may be an abbreviation of a region or an enterprise of a certain vocabulary, but also may be the number code, you can ask the tender preparation unit.
I'm not talking a load of crap to you, but I'm telling you that these symbols are people's nicknames, which are not written on the account book.