Laatste zaak van het bedrijf over Shenzhen Hanast New Material co.,LTD certificeringen

Background

A fast-growing Vietnamese manufacturer of AC and DC electric vehicle (EV) charging piles needed to raise the reliability of its outdoor charging units. As its export footprint expanded across Southeast Asia, the company began to see rising field returns caused by moisture ingress, condensation, and thermal stress inside its power modules. Its engineering team wanted a proven encapsulation material — and a supplier it could scale with.

The Challenge

• High humidity and monsoon conditions at coastal installations
• Power modules reaching 120°C+ under fast-charging loads
• Strict IEC and CE expectations for export markets
• Need for fast, repeatable dispensing on a scaling production line
• Long-term supply security for a growing order book

Existing materials cured too slowly for the target cycle time, and some grades became brittle after prolonged thermal cycling, putting solder joints and connectors at risk.

Evaluating Suppliers

The client benchmarked vendors across the region, comparing not only price but technical support, documentation quality, and the ability to customize formulations. Traders offered attractive quotes but could not answer detailed formulation questions or adjust grades quickly, which slowed the qualification process.

Why the Client Chose a China Potting Compound Factory

The client ultimately selected a China potting compound factory for three reasons: in-house RTV-2 formulation, competitive pricing at export volumes, and the flexibility to customize thermal grades. Working directly with a potting compound manufacturer — rather than a trading company — also shortened lead times and simplified technical communication, since the same engineers who developed the formula supported the client's team.

The Solution

Hanast recommended a two-part, addition-cure silicone potting compound with a balance of thermal conductivity, elasticity, and dielectric strength suitable for the client's DC power modules.

Because the material is addition-cure, it produces no corrosive by-products and cures uniformly even in thick sections — important when encapsulating dense power modules.

Implementation and Validation

Sampling, thermal-cycling validation, and dispensing trials were completed before mass production. Viscosity and color were tuned to the client's dispensing equipment, and Hanast supplied technical data sheets, MSDS, and RoHS documentation to support the client's export compliance work.

Results

• Significant reduction in moisture-related field returns
• Stable thermal performance across fast-charging cycles
• Smoother production with consistent, tailorable cure profiles
• Lower rework and scrap on the encapsulation line
• Reliable export supply with full documentation (TDS, MSDS, RoHS)

Lessons for EV Charging Pile Makers

For outdoor charging infrastructure, encapsulation is a reliability decision rather than a commodity purchase. Sourcing directly from a potting compound manufacturer gives engineers a partner who can adapt thermal grades, cure profiles, and hardness to real production and field conditions.

About Hanast

Shenzhen Hanast New Material Co., Ltd. is a source factory for RTV-2 liquid silicone and potting compounds. Established in 2010 with a 40,000㎡ production base, Hanast exports 70–80% of output and serves B2B clients such as ABB, Apple, Foxconn, and BYD. Contact us to discuss silicone encapsulation for your EV charging pile platform.