http://www.tubehifi.com - Antique Sound Lab products sold under the same brand.
http://www.audcom.com.cn
http://cattylink.com - A chinese hi-fi central. Here you can see many products from different manufacturers. Original and OEM versions.
http://www.cayin.com - Amplifiers made by Spark Audio sold under the Cayin name.
http://www.daredtube.com/index-e.htm
http://www.grandeast.com
http://www.in-young.com
http://www.jolida.com
http://www.korsun.com.cn - As Mr. Mark Levinson (Red Rose Music-RRM) said in some interviews some of the RRM products come are made by Korsun. Compare Korsum products with RRM products that can be found at RRM site.
http://www.aurumcantus.com - Ribbon speakers used in the RRM Rosebud II speaker
