求翻译：从事计算机、宽带通讯设备、无线通信设备和网络视频产品的研发和生产，是中国电信企业的主要供应商，中国最大的DSL生产制造商。是什么意思？

In computers, broadband communications equipment, wireless communications equipment and network video product development and production, China's telecommunications industry is a major supplier of China's largest manufacturers of DSL.

In carrying out computer, broadband communications equipment, wireless communication equipment and network video products of R&D and production, is China's telecommunications industry, the major suppliers of China's largest DSL product manufacturers.

Is engaged in the computer, the wide band communication equipment, the wireless communication facility and the network video frequency product research and development and the production, is the Chinese Telecommunication Enterprise's main supplier, the Chinese biggest DSL production manufacturer.

Dealing with computers, broadband communications, wireless communications equipment, and network video products development and production, is the main supplier of China Telecom enterprises, China's largest manufacturer of DSL.

Dealing with computers, broadband communications, wireless communications equipment, and network video products development and production, is the main supplier of China Telecom enterprises, China's largest manufacturer of DSL.