... the product process This product complies with YB/T5194-93 modified bitumen standard.Quality indicators as follows: Index name Index (a ... -115 Toluene insoluble content,% 28-34quinoline insoluble content,% 8-14 β-resin content,% ≥18coking value % ≥ 54 Ash,% ≤ 0.3 Moisture,% ≤ 5 Technique ... anode paste, high-power electrodes Coal tar pitch: high quality modified pitch