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The SPF (SP) type digital lock
balance-valve Patent Number: 91210079.6
Stainless Steel digital lock
SPF15T-16 type digital lock
Type ZTY (C) 47 Self-operated Pressure
Difference Self-Control Valve
Patent Number: 03264206.7

The ZTY47 (ZY47) type self-operated pressure difference control valve
(Material for small diameter copper body)
Patent Number: 01267873.2

Type LH45-16 flow Restriction
check valve

ZL-4M (ZL47F) Series of Self-operated Flux
Control Valve Patent Number: 01267874.0

fully welded ball valve
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