[Kolstein] Ultra Violin Rosin 小提松香

Extensive research has created a violin rosin which is produced through exact product control, entailing: Exact measurement of the finest ingredients in strict accord with the developed formula pouring into alloy line wooden molds to insure uniform hardening and avoid thermal cracking.A required minimum curing period for predetermined time.

广泛的研究创造了一种小提琴松香，它是通过精确的产品控制生产的，
需要：严格按照开发的配方精确测量最优质的成分，倒入合金线木模具中，
以确保均匀硬化并避免热裂。所需的最短固化时间预定时间。