Blog | Precision Metal Stampings

August 18, 2026

Heju Precision Has Been Selected as one of Dongguan’s “Doubling Enterprises” in 2026!

Dongguan City recently announced the 2026 list of “Doubling Enterprises.” Dongguan Heju Precision Electronics Technology Co., Ltd. was selected for its business strength, innovation capabilities, and steady growth momentum. What is a “Doubling Enterprise”? Since its launch nationwide in 2017, Dongguan City’s “Doubling Plan” has become a key long-term initiative to promote high-quality manufacturing development

August 11, 2026

Why Fishbone Fixtures Are the Gold Standard for CoC Burn-in Systems?

If you’re still using conventional contactors for COC (Chip‑on‑Carrier) burn‑in, this artical will tell you why fishbone fixtures in CoC burn‑in systems are necessity for any reliability lab. What Exactly Is a COC Burn-in System, and Why Is It So Demanding? Before we dive into the fixture, let’s set the stage. A COC is a

August 5, 2026

Comprehensive Analysis of COC Fishbone Fixtures in Burn-in System

The COC fishbone fixtures in Burn-in System, with its fishbone array-like design, integrates positioning slots, beryllium copper elastic contact springs, and thermally conductive trenches. It is a key high-value consumable in the production and testing of optical modules, primarily used for burn-in tests of optical chips. Its core function is to provide precise positioning, stable

July 28, 2026

COC Burn‑In Fishbone Fixtures: How They Supercharge Chip Reliability Screening

Let me draw you a picture. You’ve just finished a run of high-power laser diodes. You send them to burn-inin testing — 24 hours at 85°C with a constant current — and when they come out, half of them have degraded. Not because the chips are bad, but because your socket killed them. Poor contact.

July 21, 2026

What Really Affects Springback of Automotive Metal Stamping Parts?

Metal stamping springback is a difficult problem for the automotive stamping parts.There is not a perfect method to deal with springback of stamping parts.After researching the stamping springback problem,we get following factors: Material Performance There are different strengths of automobile stamping parts. from ordinary plate to high strength plate, different plates have different yield strength.

July 14, 2026

How Do EV Charging Terminals Achieve a 10,000-cycle Lifespan?

Repeatedly plugging and unplugging the charging connector subjects the electric vehicle charging terminals to mechanical friction, arc erosion, and oxidation/corrosion, which easily leads to performance deterioration and unstable charging. To address these rigorous operating conditions, the national standard GB/T 20234.1-2023 explicitly mandates a mating durability of 10,000 cycles for charging connectors, establishing a fundamental quality

July 7, 2026

How Can pressfit Pins Achieve Highly Reliable Connections in a Very Small Space

As new energy vehicle adoption rises, automotive electronic architecture is shifting from distributed designs to domain-centralized, central computing. Component density on BMS and ECU PCBs is increasing rapidly. In limited circuit board space, welding or screw fastening takes up space and creates reliability issues under tough conditions. Achieving dense, reliable electrical connections in minimal space

June 23, 2026

How Can you Tell if a Automotive Wire Terminals Manufacturer is Reliable?

Terminals are the most basic connection units in the vehicle’s electrical system. They are also key nodes in the wiring harness. The contact resistance, insertion and extraction force, corrosion resistance, and dimensional accuracy of a single terminal directly determine the stability of the vehicle’s signal and power transmission. These factors are also key to the

June 16, 2026

OSD, Fuse, and Rupture Discs: How do the “Safety Trio” on the Battery Cover Perform their Respective Functions?

In the safety system of new energy lithium batteries, thermal runaway prevention is crucial. While cell materials and battery pack protection are well-known, the “safety trio”—OSD, Fuse, and rupture discs—on the square aluminum battery cover creates an immediate, vital barrier for the cell. Each device has a distinct role, and together they intercept risks like