About us

SHI TSANG METAL CO., LTD. is committed to manufacture professional tools from 1986 in Taiwan.

Based on more than 38 years of experience in various tools manufacturing which use for electronic, computer, networking & telecom industries,3D printer ,Drone and serious DIY markets.
OEM is available.


SPROTEK® brand name was made from the abbreviation of SHI TSANG`s Professional Technology. In order to have the product values transforming into brand values, SPROTEK® products are a guarantee for safe, reliable working and unbeatable performance.


SHI TSANG feature is our highly adaptive, flexible operations and our leading visions to the industry future. We are committed to dedicate our best technology basis to provide high quality products and services to our valuable customers.

Quality Assurance

ISO 9001:2015 Certification(English)

ISO 9001:2015 Certification(Chinese)

We are equipped with the ISO9001:2015 certification which is our standard to examine our products to guarantee their precision and reliability.
The product has to be inspected by all testing processes including size, hardness, torque values and lifetime cycle.

To ensure the accuracy of inspection and testing provides each product manufacturing related quality conforming to DIN/ISO standard accurately.

We know that the first step in confirming quality is the right choice of materials.
Besides Chrome Vanadium(Cr-V), Chrome Molybdenum(Cr-MO) and AISI S2, we also have different options to meet customer's different demands.

Sales Worldwide

SPROTEK has many satisfied customers are all over the world including the USA, Canada, Europe, Mexico, Middle East, Asia, Australia and New Zealand. Having accumulated decades of OEM experience, SPROTEK has developed itself as a strong and respected private brand..