About product and suppliers:
            1,983 twin activities products are offered for sale by suppliers on Alibaba.com, of which speaker accounts for 22%, professional audio, video & lighting accounts for 1%. 

A wide variety of twin activities options are available to you, such as portable audio player, computer, and home theatre. You can also choose from 4, 2 (2.0), and 1 twin activities, as well as from passive twin activities

There are 1,975 suppliers who sells twin activities on Alibaba.com, mainly located in Asia. The top countries of suppliers are India, China, and Taiwan, China, from which the percentage of twin activities supply is 1%, 96%, and 1% respectively.