Certificates

patent certificate-High performance impact angle valve

patent certificate-High performance impact angle valve (2)

patent certificate-High performance impact angle valve (3)

patent certificate-High performance impact angle valve (4)

patent certificate-High performance impact angle valve (5)

patent certificate-High performance impact angle valve (6)

patent certificate-High performance slow closing check valve

patent certificate-High performance slow closing check valve (2)

patent certificate-High performance top mounted butterfly valve

patent certificate-High performance top mounted butterfly valve (2)

patent certificate-High performance long life labyrinth regulator

patent certificate-High performance long life labyrinth regulator (2)

patent certificate-Butterfly valve with automatic adjustment of the middle cavity

patent certificate-Butterfly valve with automatic adjustment of the middle cavity (2)

patent certificate-Adjustable flow control valve

patent certificate-Adjustable flow control valve (2)

patent certificate-Built-in drive shaft flow drive axial flow control valve

patent certificate-Built-in drive shaft flow drive axial flow control valve (2)

patent certificate-Built-in drive axial flow control valve

patent certificate-Built-in drive axial flow control valve (2)

patent certificate-Flexible metal seat cone sealing butterfly valve

patent certificate-Flexible metal seat cone sealing butterfly valve (2)

patent certificate-Oil platform pile shoe lifting system

patent certificate-Oil platform pile shoe lifting system (2)