EN
We summed up a set of effective Heat treatment scheme.
Tongbo Is An Innovative And Practical Manufacturer Specializing In Screwdrivers.
We pursue the growth of the brand, make good products, adhere to quality and real materials.
We follow the standardized standards for submission, sampling and sample sealing,Ensure the consistent quality of products.
From product R & D, appearance design toPerformance test, all completed independently And apply for a patent.
We sincerely welcome your advice and suggestions, which can Help us make progress.
915 Airship Series L-handle Spanner
826 Series Impact-resistant Double Ended Bits
560 series go-through screwdriver
The most commonly used materials of screwdriver shaft
The invention history of phillips screwdriver
A simple screwdriver profile