Big sound from a small speaker. XL technology is the formula of the finest SA woofer designs. XL technology is only available in SA speakers.
小型喇叭爆发强劲的声音。XL技术是出色的sa低音喇叭设计的公式，仅适用于SA喇叭。
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NingBo ETTON Electronics Ltd. Company set up in 1995. Product include car speaker, Household woofer unit, pa speaker Cabinet, Raw materials of speaker and Boom box, etc.