taegutec grades:TT7005,TT7015,TT7310,TT8115,TT9215,TT5080,TT8125,TT5100,TT9225,TT9020,TT9080,TT8135,TT7100,TT9235,TT8020,PV3010,CT3000,K10,AB2010,AB20,AB30,TC430,AS500,SC10,AS10,AS20