About 2 Trademarks found that are owned by Wenzhou Shuangzhan Machinery Co Ltd

The wording JOWIN has no meaning in a foreign language.

Fittings of metal for pipes; Hoppers of metal, non-mechanical; Manually operated metal valves; Metal hoses for plumbing use; Metal pipe collars; Metal pipe connectors; Metal storage drums; Metal tubes; Metal valves not being parts of machines; Penstock pipes of metal; Stainless steel strainers used in the commercial preparation of foods, beverages, dairy products, pharmaceuticals and drugs; Stainless steels; Valves of metal other than parts of machines including those from alloy steel and titanium; Valves of metal, other than parts of machines; Water-pipe valves of metal