qualities. gold rosin is said to produce a warm, clear tone and is appropriate for all instruments. the addition of gold to the rosin mixture can soften a harsh-sounding instrument. solo performers often find that gold rosin helps them produce a clearer, more defined tone. silver rosin creates a concentrated...
"the consumer market of bac giang lychee including local, national and export to the chinese market. in particular, the domestic market is mainly concentrated in hanoi, bac giang and neighboring provinces in the north and the south are mostly ho chi minh city. the amount of bac giang lychee be made through...