A. The acid test on your tools can be finished in your toolmaker of China before mold texturing & mold etching.
B. Yuan Su can be your a third party supervision company for your tools project to acid test in China so that avoiding welding and steel material difference by toolmaker.
C. Yuan Su can issued report and feedback to you about acid test details.
Please know Draft Angle, Welding, Standard Polish to operate mold detail before acid test.
Carbon Fiber Texture