 Vi tri trung tam, do moi xay dung nen moi thu deu moi va sach se, nhan vien nhiet tinh. Vi tri trung tam, do moi xay dung nen moi thu deu moi va sach se, nhan vien nhiet tinh.
neutral neutral neutral neutral neutral neutral neutral neutral neutral neutral neutral positive neutral neutral neutral neutral neutral neutral positive neutral neutral neutral neutral neutral neutral neutral neutral positive neutral neutral positive neutral neutral