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目前显示的是标签为“valve screw”的博文

Shanghai order valve screw quality and strength related – Shi Shi Tong

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On the third day of contact with Shi Shi Tong, Mr. Zhang from Shanghai decided to travel to Shenzhen to inspect the Shi Shi Tong screw manufacturers in Shenzhen to see the actual production situation, and then decide whether to establish long-term cooperation with non-standard  valve screw . Mr. Zhang believes that the quality of the  valve screw  is related to strength, because it is in line with the requirements of Mr. Zhang from the sample, but if you establish a long-term cooperative relationship, you still need to confirm whether there is a corresponding supply strength. Non-standard valve screw, look at the material, look at the size, look at the surface treatment, three look at the surface treatment, the valve screws used in the gas, in addition to the material to be bright, also need to have a tight seal. There can be no gaps. The size should be accurate, and the dispensing part must ensure the close fit of the screw to the workpiece. The surface of the screw...