The United States VTON Granville shield imported pneumatic multi-stage step-down regulator valve, using the sleeve guide, pressure balanced valve.
美国VTON威盾进口气动多级式降压调节阀，采用套筒导向，压力平衡式阀芯。
The United States VTON Granville shield imported pneumatic multi-stage step-down regulator valve, using the sleeve guide, pressure balanced valve.
美国VTON威盾进口气动多级式降压调节阀，采用套筒导向，压力平衡式阀芯。
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