China Suan Houseware factory

Whether using heat transfer or screen printing, the printed area could never reach the very top rim or the very bottom of the cup. A margin of approximately 5mm at both ends would always remain unprinted — creating a visible "band" of blank material.

Last week, we explained why some glass bottles glow green while others glow blue. The takeaway was clear: for quality, safety, and visual appeal, low-iron or borosilicate glass is the better choice.

Understanding the material science behind glass color—and why it matters for your kitchen, your brand, and your customers.