This is the 6317th most frequent Korean word.
쌍방울로부터
"From Ssangbangwool" (Ssangbangwool is a proper noun, often referring to a company name in Korea).
The phrase "쌍방울로부터" is used to specify the origin of the letter here, showing possession or source.
쌍방울로부터 온 편지가 도착했습니다.
A letter from Ssangbangwool has arrived.
Here, "쌍방울로부터" specifies the seller or source of the products purchased by the company.
회사가 쌍방울로부터 새로운 제품을 구입했습니다.
The company purchased a new product from Ssangbangwool.
In this sentence, "쌍방울로부터" indicates the source or provider of the help that was received.