Your one stop MACHINING partner for "Plug and Play" and long lasting product, because we understand the value of your MACHINE UPTIME.


Aerospace Component

Industrial Component

Special Cutting Tool




Rotary Die and Tooling



Reconditioning of Carbide and Hardened Steel Rotary Die Cutter

STi has more than a decade of experience in manufacturing and resharpening of carbide and hardened steel Rotary Die Cutter. Each cutter is inspected prior and after resharpening and each cutter is individually tested in our dedicated test equipment to ensure the quality of our regrinding.

Waterjet and Laser Cutting Service

STi ’s CNC Waterjet Machining Center cuts nearly all material precisely to your required tolerance. Our laser cutting machine with rotary axis capable to process not only flat but also pip e materials.

Carbide, PCD and PCBN Cutting Tool Reconditioning

STi recondition and resharpen rotating and stationary carbide, PCD and PCBN cutting tools. PCD and PCBN re - tipping are available subjected to cutting tool condition.

Calibration of Measuring Instrument and Inspection Gage

STi Calibration Laboratory is ISO17025 certified and equipped with 0.1micron resolution measuring machine . ISO17025 enables laboratories to demonstrate that they operate competently and generate valid results, thereby promot ing confidence in their work both nationally and around the world.


Manufacturing Facilities and

1. Conventional Machining
2. Non-Conventional Machining
3. Special Process
4. Unique Capabilities

Quality Control and
Reverse Engineering Facilities

1. Contact Measuring Machine and Instrument
2. Non-Contact Measuring Machine and Instrument

Certificate & Design Patent


About Us

Our Story

Our humble beginning in 1979 started from Mr. Santoso’s dream to meet the growing demand in quality mechanical components for the domestic industries. CV. SANTOSO was established in the residence of the Santoso family in the city of Tangerang, suburb of the capital city, Jakarta in Indonesia.

Since the early years, we are recognized for the quality and value of our product. In order to ensure optimum control of manufacturing processes and quality, we manufacture our products in-house.

Over time, STi business and product line expand along with customer’s trust and support. We not only serve low volume high mix production, but also high volume mass production of mechanical components.

Thanks to our employees and customer’ support, we have grown to become a national leader in precision machining in Indonesia and expanding our market internationally.
Our list of esteemed clients along with the comprehensive machining expertise and the state-of-the-art facilities are confirmation of our commitment to our customers.

Our Motto

Your one stop shop for “Plug and Play” and long lasting product, because we understand the value of your MACHINE UPTIME.

Our Mission

We are the one stop shop for custom machining and fabrication needs. We build the best “plug and play” products and unique solutions, because we understand the value of your MACHINE UPTIME.

Our Vision

To enable our customers realizing the full potential of their production and to become the customer’s preferred choice in custom machining, fabrication and engineered product, globally.

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