Automotive Part

Precision Aluminum Automotive Parts

Trusted Quality from Tostem Thai

High-precision aluminum automotive components. Lightweight, ultra-strong, and custom-engineered for

Next-Gen Mobility & EV solutions.

High-Standard Quality Equivalent to IATF at TostemThai

Although we do not officially hold the IATF certification, our quality management and internal workflows are rigorously implemented in strict accordance with IATF standards.

PPAP Ready : We are fully capable of preparing all necessary data and documentation to support your PPAP (Production Part Approval Process) requirements. You can perfectly trust our verified, world-class quality control.

More Than a Manufacturer : Your Partner in Automotive Innovation

Backed by nearly 40 years of expertise and a dedicated R&D team,

TOSTEM Thai actively co-creates and tests high-precision aluminum components alongside your engineers

delivering advanced solutions tailored for the future of mobility and EV markets.

Such as Roof lack, Side step, Battery tray, Sunshade, Sport bar , Eletrnic rail, After market part

Trusted Tier 1 OEM

Supplier As a strategic manufacturing partner for Tier 1 automotive suppliers serving leading Japanese and European automotive brands, our products are strictly protected under Non-Disclosure Agreements (NDAs).

At TOSTEM Thai, we prioritize business confidentiality and the protection of our clients' intellectual property. To discuss your specific project requirements or technical specifications, please contact our engineering team directly.

Beyond Manufacturing : We Deliver End-to-End Solutions

In the automotive industry, parts manufacturing is more than just a transaction it is a long term partnership built on trust.

We deliver comprehensive, end-to-end solutions from initial concept to mass production,

ensuring maximum precision, ultimate efficiency, and optimized cost-effectiveness at every stage of your project.

Our Value - Added Journey

State 1

Pre-RFQ & Engineering Consultation

Design & Feasibility Analysis :

We collaborate on drawing reviews and conduct comprehensive assembly checks with adjoining parts from day one to guarantee 100% manufacturability and seamless on-site integration.

Process & Machine Optimization :

We recommend the most efficient manufacturing processes and select optimal machinery tailored to your specifications, balancing international quality standards with cost-efficiency.

Total Transparency :

We provide clear, precise visibility into productivity rates and detailed cost breakdowns, empowering your team to manage budgets with maximum accuracy and confidence.

State 2

Pre-Production & Launch Readiness

Long-term Commitment :

We fully support the standard 5-to-6-year Model Life Cycle typical of the automotive industry, with our dedicated team initiating rigorous preparation 1 to 2 years prior to launch.

Production Line Setup :

We design and establish dedicated production lines that strictly adhere to the conditions agreed upon in the quotation, ensuring consistent quality control and cost stability.

Prototype & Event Validation :

We accommodate prototype submissions and strictly support all Quality Validation Events, ensuring every component thoroughly complies with stringent Carmaker regulations before Start of Production (SOP).

State 3

Mass Production & Continuous Improvement

Year-on-Year Cost-Down Collaboration :

We are committed to growing alongside you by actively supporting and aligning with our clients' annual Cost-Down policies, delivering maximum value throughout the 5-to-6-year model lifecycle.

Proactive CR (Cost Reduction) Activities :

We drive continuous improvement on the production floor by relentlessly eliminating waste, boosting productivity rates, and optimizing logistics to pass tangible cost savings back to our clients.

Joint VAVE Initiatives :

Our engineering team works hand-in-hand with yours to pitch and execute VAVE ideas whether through structural optimization, alternative material sourcing, or process refinement—under the principle of "Reducing Costs, Never Quality," ensuring 100% Carmaker Compliance.