As a common fastener, carbon steel is also a common screw material. Of course, carbon steel is als...

Headshots are incomprehensible to those unfamiliar with the screw industry. Screw manufacturers tel...

There are two types of screw surface inspections, one is the inspection before the screw is produce...

German Institute for Standardization. German name: Deutsches Institut für Normung e.V. German abbre...

1. Soluble emulsified cleaning agent Soluble emulsifiers usually contain clay, solvents, emulsifiers...

1. Select a power supply with straight external characteristics, and select positive polarity (the ...