群交射精白浆视频,亚洲熟女www一区二区三区,国模杨依粉嫩蝴蝶150P,亚洲老妈激情一区二区三区

DG87系列Back
Model features
Name :Differential Pressure Gauge
Model No.:DG87 Series
Overview:
This gauge is suitable for measuring extreme low pressure, detecting the pressure loss caused by air conditioner filter, and applying in the flow meter and minute differential gauge.
Feature:
Small hysteresis silicon rubber is applied to the diaphragm.
Special linkage and magnifying mechanism ensures the perfect anti-shock ability and stable function.
Special safe structure applied to avoid any damage caused by sudden over pressure.
Zero adjustment from outside and of small and light weight.
Specification
External Dimensions
Model number configuration
長野福田(天津)儀器儀表有限公司?http://www.sxsjwjc.cn/(tianjin), All Rights Reserved. 安全聯(lián)盟
Legal NoticeRecruitmentContact UsWebsite Map