The status of gear molds is mixed

Looking at the status quo of our country's gear molds can be described as mixed. Hi there is a certain basis for the production of gear molds, and the general trend in the development of plastic gears will bring greater market space for gear molds; the worry is that the level of domest

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What are the conditions for a fire?

What are the conditions for a fire? A: There are three conditions for fire: (1) Flammable substances. The flammable solid (wood, paper, etc.), flammable liquids (diethyl ether, alcohol, etc.), white phosphorus [pyrophoric material, an alkyl metal, etc.) and combustible gas (coal gas, etc.). (2) S

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