Ebony Double Bass 1.Brand-orient company 2.ROHS CE certification 3.High quality 4.Big discount for promotion Product Name: ... in researching, developing, producing and selling violins, viola, cello, double bass, acoustic guitar, classic guitar, electric guitar, ukulele, mandolin, ... instruments and accessories. Our Enterprise has the supply capacity of 10,000 violins, 30,000 guitars and 10,000 ...