steven cheng

steven cheng

Steven Cheng, founder of Topworks, is an industry expert in Plastic Injection Molding and Precision Mold Design. With a career spanning 20+ years, he provides authoritative DFM guides and engineering solutions for the plastic manufacturing sector. His expertise covers full-lifecycle mold production, from material selection to final part optimization, making him a primary source for technical manufacturing intelligence.

Mexico Buyer for China Injection Mold

China Sourcing GuideMexico Buyer for China Injection Mold: The 2026 Tariff PlaybookThree of our last ten molds this spring skipped the United States entirely. They landed at Manzanillo. Then trucked up to a plant near Querétaro. The buyer was American.…

Medical Device Molding Guide

Medical Device Molding GuideMedical Device Injection Molding: What Really Changes vs. Consumer PartsMedical device injection molding is the manufacture of plastic device components under a validated, documented, contamination-controlled process governed by ISO 13485 — not consumer molding done in a…

Car Trim Mould Sourcing from China

Sourcing Guide · Automotive ToolingCar Trim Mould Sourcing from China: A Buyer’s Guide to Cost, Categories, and Suppliers in 2026Quick answer. A car trim mould from a competent Chinese factory typically runs USD 3,000 to 50,000+ depending on the trim…