Joyce HE

Process Engineer at Mastars Industries, a precision manufacturing company based in Shenzhen, China specializing in high-complexity injection molds and precision CNC-machined components for automotive, medical, and electronics industries.My daily work spans the full manufacturing cycle — from mold design validation and CNC programming to assembly verification and production floor problem-solving. I focus on catching issues before they become defects: verifying cooling channel continuity, checking slide and ejector fit, and ensuring every toolpath order accounts for thermal buildup and material stress.Precision manufacturing is about understanding how every operation affects the next. The best parts don't come from a single perfect pass — they come from getting the details right at every stage.Open to connecting with CNC programmers, mold engineers, manufacturing professionals, and anyone passionate about precision.