Hospitals should uphold the principle of public welfare.
Tips
usage
公益性 is used as an attributive adjective (公益性 + noun) or as a standalone noun. Common collocations: 公益性岗位 (public welfare position), 公益性活动 (public interest activity), 公益性组织 (public interest organization).
grammar
The 性 suffix turns 公益 (public welfare) into an abstract quality. Compare: 公益 (public welfare, noun) vs. 公益性 (having a public welfare nature, attributive). Similar: 创造性 (creativity), 重要性 (importance).