As a customer, how could you help the factory make lower price quotation? With no threat, no fighting.

Metal production cost is evaluated by total processing time and the machine depreciation cost.

Thousands of tool sets are in the hardware shops or Amazon, but the price range is quite large from ten dollar for a 32 pc Set to thousands dollar for a 556 pc Set.

How to design a market-favor tool set?

In general, most of impact socket are based on US. spec called ANSI/ASTM (American National Standards Institute) or Germen spec called DIN (Deutsches Institut für Normung). So what's the difference between them? Here are the three major points we have experienced.