Beijing Beijing Changyinyou Technical Development Co., Ltd. (original Beijng Digital Audiovisual Technical Center), founded in the year of 1997. We have been pursuing preeminent quality and surpassing ourself with the concept of honesty, specialty, high-efficiency.

Our company is the designated legitinate agents of some dozens of well-know brands at home and abroad, and as well the wholesaler of hundreds of world famous brands, professional audio and lights, peripheral sets, video equipment and with our own professional technique advantages, we win a broad market.

In the section of after-sales service, our company established a special Client Service Department and a Maintenance Department, the technique stuff in the two departments can offer professional level service for clients about the products maintenance and warranty without delivering them to the foreign manufacturers. Every year we do a regular customer return visit to ensure the superior quality of our products. Also customers can participate the techniquetraining cause hold in our company, then get a manual about the maintenance knowledge, etc., meanwhile welcome your telephone counseling about the technique problems.