NASDAQ:ZKIN

Trademarks

NO.PATENT NAMEOWNERCATEGORYPATENT CODEAUTHORIZATION DATE
1Anti vibration grooveZhejiang ZhengkangDesign Patent2.02E+1212/21/16
2Anti vibration groove connector for pipelineZhejiang ZhengkangUtility Models Patent2.02E+1201/18/17
3High strength tensile mechanical compression type pipe jointZhejiang ZhengkangUtility Models Patent2.02E+1209/21/16
4Tensile elastic ringZhejiang ZhengkangUtility Models Patent2.02E+1209/21/16
5Special joint for gasZhejiang ZhengkangUtility Models Patent2.02E+1209/21/16
6Self sealing ringZhejiang ZhengkangUtility Models Patent2.02E+1211/23/16
7Warm jacket (45 degree elbow)Zhejiang ZhengkangDesign Patent2.02E+1207/20/16
8Articulated bellowsZhejiang ZhengkangUtility Models Patent2.02E+1207/27/16
9Stainless steel pipe warm jacketZhejiang ZhengkangUtility Models Patent2.02E+1207/27/16
10A new type of metal pipe fittingZhejiang ZhengkangUtility Models Patent2.02E+1207/27/16
11Three way warm jacketZhejiang ZhengkangDesign Patent2.02E+1207/27/16
12Warm jacket (90 degree elbow)Zhejiang ZhengkangDesign Patent2.02E+1207/27/16
13Direct thermal coverZhejiang ZhengkangDesign Patent2.02E+1209/07/16
14Thin wall compression type metal pipe fitting type O sealing ringZhejiang ZhengkangUtility Models Patent2.02E+1208/05/15
15Internal expansion type stainless steel pipe mouth shaping deviceZhejiang ZhengkangUtility Models Patent2.02E+1208/05/15
16Full automatic stainless steel pipe high pressure water pressure testing machineZhejiang ZhengkangUtility Models Patent2.02E+1208/05/15
17An elbow pipe automatic flat head machineZhejiang ZhengkangUtility Models Patent2.02E+1208/05/15
18Full automatic steel pipe air tightness detecting machineZhejiang ZhengkangInvention Patent2.02E+1203/02/16
19Full automatic steel pipe air tightness detection deviceZhejiang ZhengkangUtility Models Patent2.02E+1206/25/14
20Loading device of full automatic steel pipe air tightness testing machineZhejiang ZhengkangUtility Models Patent2.02E+1207/16/14
21Material distributing device of full automatic steel pipe air tightness detecting machineZhejiang ZhengkangUtility Models Patent2.02E+1207/16/14
22Multi-station semiautomatic fitting formerZhejiang ZhengkangInvention Patent2.02E+1208/26/15
23Double-cone double-clamp metal pipeline connecting pieceZhejiang ZhengkangUtility Models Patent2.02E+1212/18/13
24Semi-automatic multi-station pipe fitting forming machineZhejiang ZhengkangUtility Models Patent2.02E+1212/18/13
25Pressing Former of Metal Pipe Fitting Zhejiang ZhengkangInvention Patent2.02E+1205/06/09
26Convex-ring-free self-locking and hermetic-connecting device for thin-walled stainless steel pipeZhejiang ZhengkangUtility Models Patent2.02E+1201/11/12
27LGSSP connecting piece without bulge loop and adopting self-locking sealingZhejiang ZhengkangUtility Models Patent2.02E+1202/15/12
28Inner lining clamping press composite tube connecting piecesZhejiang ZhengkangUtility Models Patent2.02E+1207/23/08