ACM announces the launch and immediate availability of two new products: SI-TUFF™ SB-050G and SB-300G. Both products are engineered fibrous blends. SB-050G is a microfibre blend, and SB-300G is a fibre blend. In many applications, these products perform at parity or even better than pure fibre or microfibre. Yet they are engineered to be lower cost than pure fibre or microfibre. The result is an even better value when cost and performance are compared. SI-TUFF™: the Ultimate Performance Additive .