... Toner cartridege compatible for Samsung SCX-4520/4720 (CHN,KOR,EXP) Color:BK Page yield: 3K/5K 1. Chip ... cartridege compatible for Samsung SCX-4520/4720 (CHN,KOR,EXP)Color:BKPage yield: 3K/5K1.Best quality and favorable ... samples.4.Chip Different Version for different Region: China/EXP/Europe/Korea/Northern America/Latin America/Asia/USA/Africa/ ... compatible for Samsung SCX-4520/4720 (CHN,KOR,EXP)