Introduction: Beyond the Catalog — Why Custom Matters Hi, I’m Barry Zeng, a manufacturing engineer at Shanghai Yunyan Prototype & Mould Manufacture Factory. Every week, I meet clients who can’t find the part they need in any standard catalog —…
Introduction: Understanding the Heart of Rotational Molding Hi, I’m Barry Zeng, a manufacturing engineer at Shanghai Yunyan Prototype & Mould Manufacture Factory. Over the years, I’ve designed and built many Rotational Molding Molds for clients across industries — from large…
Introduction: Every Gram of Scrap Is Lost Profit Hi, I’m Barry Zeng, a manufacturing engineer at Shanghai Yunyan Prototype & Mould Manufacture Factory. In my decade of CNC machining, I’ve seen shops throw away 20–30% of their raw material as…
Introduction: When Microns Matter Hi, I’m Barry Zeng, a manufacturing engineer at Shanghai Yunyan Prototype & Mould Manufacture Factory. Over the years, I’ve machined thousands of critical components — medical device parts, aerospace fittings, and precision tooling — where a…
Introduction: Why Carbon Fiber is Transforming Engineering Hi, I’m Barry Zeng, a manufacturing engineer at Shanghai Yunyan Prototype & Mould Manufacture Factory. Over the past decade, I’ve watched carbon fiber move from aerospace labs to everyday products — from drone…
Introduction: Why Most Quote Requests Get Delayed — And How to Avoid That Hi, I’m Barry Zeng from Shanghai Yunyan Prototype & Mould Manufacture Factory, a manufacturing factory specializing in CNC machining, 3D printing (SLA/SLS/FDM), and sheet metal fabrication. Every…