News and Events

Many buyers ask whether they should choose an aluminum mold or steel mold for their new injection molded parts. These two tooling options are not simply “cheap vs expensive”. They have different material properties, service life and quality performance, and fit completely different project scenarios. Read More

When designing injection molded parts with undercuts, two headaches always come up: surface scratches (drag marks) and visible parting lines. Many buyers and mold designers wonder: lifter, slide or collapsible core? There is no one-size-fits-all answer. The right selection helps you reduce cosmetic defects and hide parting lines on visible surfaces. Read More

Many customers ask whether a single injection mold can run more than one plastic material. The short answer: it is possible, but only under strict conditions. Mold steel is one of the critical limiting factors. Read More

Valve shut-off gates (valve gate hot runners) use a mechanical valve pin to open or close the gate on demand. Unlike open hot runners, which stay continuously open during production, valve gates provide active flow control. They are not a mandatory upgrade for every mold, but a specialized solution for specific molding challenges.

 Typical scenarios where valve shut-off gates are required Read More

When we quote an injection mold, surface finish and draft angle are two essential items that customers frequently inquire about. Mold surface treatment mainly falls into two categories: SPI polish finish and etched texture (graining). Different finishes carry different requirements for draft angle. Read More

Many overseas buyers ask the same question when they receive this two-shot handle sample: why one part of the handle is glossy and smooth, while the grip area delivers a fine matte soft-touch feeling?

Quite a few assume the matte texture comes from post-spray painting after injection molding. This is a common confusion in plastic surface finishing: in-mold texture vs post-treatment coating. Read More

If you work with custom injection molded plastic parts, you have almost certainly seen a thin seam running along the edge of a component. This is the parting line (PL) — one of the most fundamental, and most misunderstood, features of injection molding.

Many buyers mistakenly think a parting line means the product is two separate pieces glued together. This is not true. The finished plastic part is molded as one single piece in one shot. The line simply marks where the two halves of the injection mold close and seal together before plastic is injected. Read More

Plastic parts with undercuts cannot eject directly along the mold opening direction. Mold designers have three mainstream mechanical solutions: slides (side actions), lifters (angled ejectors), and collapsible cores. Many engineers confuse these three structures. This article explains their working principles, use cases, pros & cons, and selection logic for your DFM review and quoting. Read More

Quality control is the backbone of every reliable injection mold. A well-executed QC workflow catches dimensional errors, surface defects and assembly issues before the injection mold leaves our factory, avoiding costly rework and production delays for mass molding. Our mold QC system covers three critical stages: CMM coordinate measurement, first article inspection (FAI), and mold pre-shipment inspection. Read More

Poor scratch resistance is one of the most common complaints for injection molded plastic products. Many base thermoplastics like ABS, PP and PA12 are relatively soft on the Mohs hardness scale. Fine dust, daily contact and friction will leave visible scratches easily.

There are multiple ways to boost scratch resistance for your injection molding parts. We can divide the solutions into 3 categories: material modification, mold & structure optimization, and post-mold surface finishing. Read More

When manufacturing decorative ribbed plastic tiles, choosing the right surface finish is critical. Your selection directly impacts appearance, unit cost, wear resistance, production yield and environmental compliance. For 3”×6”, 8mm thick ABS tiles with parallel ribs, especially for medium-to-large batch orders up to 73,000 pieces, there are 5 practical finishing solutions to consider.  Read More

PA12 (Polyamide 12 / Nylon 12) is widely selected for outdoor equipment because of its low moisture absorption, excellent low-temperature toughness and chemical resistance. When formulated with UV stabilizers, UV-resistant PA12 becomes an ideal material for vehicle tracking housings, outdoor sensor enclosures and exposed cargo safety components.

UV additives and PA12 base resin together bring unique challenges for mold design and molding. Improper tooling will cause yellowing, gas burns, silver streaks, warpage and dimensional drift. Read More