... : GB/T 7384, HG/T 3505, GB/T 6365, GB/T 7380 Type: Span 20 Hydroxyl value(mgKOH ... : GB/T 7384, HG/T 3505, GB/T 6365, GB/T 7380 Type: Span 40 Hydroxyl value(mgKOH ... : GB/T 7384, HG/T 3505, GB/T 6365, GB/T 7380 Type: Span 60 Hydroxyl value(mgKOH ... : GB/T 7384, HG/T 3505, GB/T 6365, GB/T 7380 Type: Span 80 Hydroxyl value(mgKOH ... : GB/T 7384, HG/T 3505, GB/T 6365, GB/T 7380 Type: Span 85 Hydroxyl value(mgKOH ...