What impacts do different materials have on the service life of staple guns?

The plastic staple gun delivers a service life of more than 7,000 shots, the iron staple gun over 15,000 shots, and the aluminum‑alloy staple gun over 30,000 shots.

What are the performance differences between CR‑V and 45# steel for hex key wrenches?

- CR‑V：Chrome‑Vanadium steel, high torque strength, good toughness & wear resistance for industrial heavy‑duty application. - 45# steel：Carbon steel, for light‑duty household use, …

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Which common industry standards or certifications should these hand and cordless tools comply with?

Common areas are mechanical safety, electrical safety and chemical restrictions (e.g., CE/EMC, RoHS for many markets); the site doesn't list certifications, so request certificates…

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