3 sentences

1. 他在市中心挂牌开了一家私人诊所。

   tā zài shì​zhōng​xīn guà​pái kāi le yī jiā sī​rén zhěn​suǒ.

   He opened a private clinic in the city center.

   Source: Dong Chinese Dictionary

2. 这家新成立的研究中心今天正式挂牌办公。

   zhè jiā xīn chéng​lì de yán​jiū zhōng​xīn jīn​tiān zhèng​shì guà​pái bàn​gōng.

   The newly established research center officially opened for business today.

   Source: Dong Chinese Dictionary

3. 该公司的股票已在上海证券交易所挂牌上市。

   gāi gōng​sī de gǔ​piào yǐ zài Shàng​hǎi zhèng​quàn jiāo​yì​suǒ guà​pái shàng​shì.

   The company's stock has been listed on the Shanghai Stock Exchange.

   Source: Dong Chinese Dictionary