JSN (W) mechanical five anti-program lock

Glossary What is the "five defenses" of electricity? a. Prevent accidental pull-in switch; b. Prevent load-carrying isolation knife; c. Prevent accidental charging interval; d. Prevent live grounding wire (with grounding knife); e. Prevent grounding wire (grounding knife) Closing; Progr

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Car key development

mechanical lock Mechanical locks are the most common application and the earliest car anti-theft locks. Now they are rarely used alone. They are mainly used in combination with electronic and chip type. The steering wheel lock is used on the old mulberry. Mechanical locks mainly play a role in lim

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Domestic steel demand growth will gradually decline in 2011

During the 4th China Steel Logistics Cooperation Forum held on January 8, the participating steel mills, associations, analysts and other people predicted the steel market in 2011. It is generally believed that the growth rate of steel demand in 2011 will fall, but Steel production capacity is st

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