Concentration in 36~38%CB 30~32%HB 28/30%HB and 28~30%CB ,Good quality, nice service and reliable promise, those make us have a high credit in my clients.
Concentration in 36~38%CB 30~32%HB 28/30%HB and 28~30%CB ,Good quality, nice service and reliable promise, those make us have a high credit in my clients.
