NINGBO YINZHOU JARL ELECTRONIC TECHNOLOGY CO. LTD. With over 15 years of experience in the manufacture of audio equipment,we have approx 300worker in our factory . have 20 engineers and 30 QC workers. We have become a leading manufacturer of professional audio systems. Our partners are satisfied with our excellent prices, top quality designs, safe packaging and fast delivery. Meanwhile, our after-sales service standards are guaranteed. Once you buy our products, we will not leave you ...