This is the 13065th most frequent Korean word.
동아제약
Dong-A Pharmaceutical.
In this sentence, '동아제약' is used as a noun representing the name of a company.
동아제약은 신약을 연구하는 제약 회사입니다.
Dong-A Pharmaceutical is a pharmaceutical company researching new drugs.
Here, '동아제약' functions as a possessive noun indicating the ownership of the products.
나는 동아제약의 제품을 자주 사용합니다.
I often use products from Dong-A Pharmaceutical.
In this case, '동아제약' is used to specify the organization where the speaker wishes to work.