[Kolstein] Ultra Viola Rosin 中提松香

Exacting research and development has perfected Ultra Formulation Supreme rosin in several grades: Violin, Viola, Cello medium, Cello normal, Bass in All-weather, soft or hard grades. World famous for its low powdering and smooth, easy bowing.

经过严格的研究和开发，Ultra Formulation Supreme 
松香具有多个等级：小提琴、中提琴、中提琴、普通大提琴、全天候贝司、软质或硬质等级。
以其低粉化、光滑、易弯曲而闻名于世。