Exhibit 8.1

List of Subsidiaries

Subsidiary	Jurisdiction of incorporation or organization
Wenzhou Weijia Pipeline Development Co., Ltd.	People’s Republic of China
Zhejiang Zhengkang Industrial Co. Ltd.	People’s Republic of China
Wenzhou Zhengfeng Industry and Trade Co. Ltd.	People’s Republic of China
xSigma Collectible Limited	British Virgin Islands
xSigma Corporation	British Virgin Islands
xSigma Entertainment Limited	British Virgin Islands
xSigma Trading, LLC	Delaware
ZK International Uganda Limited	The Republic of Uganda
ZK Pipe Industry Co. Ltd.	Hong Kong SAR