3 sentences

1. 所有员工都必须遵循公司的规章制度。

   suǒ​yǒu yuán​gōng dōu bì​xū zūn​xún gōng​sī de guī​zhāng zhì​dù.

   All employees must follow the company's rules and regulations.

   Source: Dong Chinese Dictionary

2. 为了维护秩序，我们必须订立新的规章制度。

   wèi​le wéi​hù zhì​xù, wǒ​men bì​xū dìng​lì xīn de guī​zhāng zhì​dù.

   To maintain order, we must establish new rules and regulations.

   Source: Dong Chinese Dictionary

3. 公司要求全体员工必须严格执行新出台的规章制度。

   gōng​sī yāo​qiú quán​tǐ yuán​gōng bì​xū yán​gé zhí xíng xīn chū​tái de guī​zhāng zhì​dù.

   The company requires all employees to strictly implement the newly issued rules and regulations.

   Source: Dong Chinese Dictionary