The copy is clear and suitable for an English B2B manufacturing website. I recommend a small refinement to make the wording more natural and customer-focused:
Materials We Work With
We provide precision machining for a wide range of materials, including stainless steel, aluminum alloys, carbon and alloy steels, non-ferrous metals such as titanium, brass, copper, and bronze, as well as engineering plastics such as POM, PA, PTFE, PEEK, and ULTEM.
After reviewing the material properties, operating environment, part geometry, and drawing requirements, we can recommend a suitable material and machining approach for your application.
Material compatibility, sourcing options, surface treatments, and material certification requirements are reviewed based on your drawings and specifications. We will confirm the applicable options and requirements before production begins.
Why this version is better
Adds brass and bronze, which are included in the Japanese source text.
Uses a wide range of materials, which is more natural than “a broad range” here.
Changes customer’s drawings to your drawings for a more direct B2B tone.
Replaces surface-treatment options with surface treatments, which is more concise.
Adds a clear closing sentence: before production begins.