2 sentences

1. 几家大型建筑公司都参与了这项工程的投标。

   jǐ jiā dà​xíng jiàn​zhù gōng​sī dōu cān​yù le zhè xiàng gōng​chéng de tóu​biāo.

   Several large construction companies participated in the bidding for this project.

   Source: Dong Chinese Dictionary

2. 只有具备相关资质的公司才能参与该项目的投标。

   zhǐ​yǒu jù​bèi xiāng​guān zī​zhì de gōng​sī cái néng cān​yù gāi xiàng​mù de tóu​biāo.

   Only companies with the relevant qualifications can participate in the bidding for this project.

   Source: Dong Chinese Dictionary