JUMBOAUDIO is the global leading manufacturer in speaker box industry with more than 10 year’s history and experience since 2007. There are 3 manufacturing bases covering 40,000square meters, with annual production capacity of 1,200,000pcs. It also has a strong R&D team ,annually developing16 new models and 2 independent patents.We have 14 automatic speaker assemble lines, comprising 7 working precedes and 10 key quality control points