Wanchang has been producing high-quality audio equipment more than a decade .Products covered by professional speakers, amplifier; KTV speakers, amplifier; mixer,Electronic peripheral equipment and so on, the company by virtue of intimate services, the advantages of products, high-quality personnel team has won a good reputation of many partners, and its establishment of good relations of cooperation.

JSL founding sound in 1980, is located in California's future Acoustics Laboratory, future Acoustics Laboratory will western jazz style and the Chinese nation spirit harmony as the name Sir Dragon (jonshlong). Sir

Shi Long in Europe and the United States sales in ten years to become known as the western professional sound brand. Independent innovation and research has been focused on acoustic technology. Future acoustic research laboratory using the most advanced technical conditions and the most appropriate

With the design concept of market products, so that "JSL" to excel, in Europe and the United States to win the majority of consumers alike. Today, "JSL" on the basis of the elimination of the courage to innovate, and strive to the most perfect productAnd after-sales service to win the favor of the vast number of customers.