Explore our elite portfolio of advanced additives, brighteners, and carrier chemicals designed for maximum bath stability and high-purity deposits.
SUZHOU HIYIE CHEMICAL CO., LTD. is a leading enterprise in the formulation and synthesis of specialized plating additives. Our comprehensive product portfolio serves consumer electronics, high-speed telecommunication equipment, semiconductor manufacturing, automotive hardware, and high-precision craft gifts.
By collaborating with leading domestic and international chemical research institutes and universities, HIYIE has established a mobile R&D center dedicated to overcoming industry barriers. With established research facilities in Wuhan and Shanghai, our service footprint covers major manufacturing regions like the Pearl River Delta, Yangtze River Delta, and the Bohai Rim. Our advanced formulations are trusted by market leaders including Foxconn Technology Group, Qinghai Salt Lake Group, Chint Group, Hongbao Group, Stanley Group, and Shifeng Group.
Why global manufacturing leaders rely on HIYIE for their critical surface chemistry processes.
We field a highly trained engineering and sales force, ensuring fast response times and deep chemical application assistance for our partners.
Our collaborative research network with universities allows us to custom-develop surface chemistry solutions tailored to unique substrate specifications.
We develop high-performance, eco-friendly formulations, including cyanide-free zinc and trivalent chromium processes, ensuring compliance with global mandates.
Our dedicated support teams assist clients from initial bath configuration through to scale-up manufacturing and ongoing chemical bath optimization.
In modern electrodeposition, tinning additives are critical for determining the microstructural morphology, thickness consistency, and long-term solderability of deposited tin layers. These additives function by selectively adsorbing onto high-energy crystal facets at the cathode surface. This temporary barrier blocks localized charge transfers, raising cathodic polarization and forcing the formation of fine, dense crystal grains.
Without properly balanced additives—including brighteners, carriers, and leveling agents—electroplated tin coatings are susceptible to dendrite formation, step coverage issues, and tin whiskers. Our formulations use precisely synthesized organic molecules that remain stable under high-current-density conditions, minimizing breakdown byproducts and extending chemical bath life.
Acid tin plating processes, such as stannous sulfate or methanesulfonic acid (MSA) systems, are valued for their fast deposition rates and low operating temperatures. However, they rely on complex surfactant matrices to keep stannous ions stable and prevent natural oxidation into stannic tin (Sn4+).
Alkaline tin plating processes utilize potassium or sodium stannate baths. While they offer superior throwing power on complex geometries, they run at higher temperatures and lower current efficiencies. Choosing the right additives depends on your substrate geometry, production speed, and thermal tolerances.
High-reliability tin plating often requires proper underlayers. For instance, electroplating a nickel barrier layer between a copper substrate and the tin finish prevents copper-tin intermetallic compounds (IMCs) from forming, which can degrade solderability over time.
Our product line includes high-performance nickel systems like FS100 Semi-Bright Nickel Plating and 1149 Barrel Bright Nickel Plating, as well as HITEC EN 6786 A/B/C High Phosphorus Electroless Nickel. These systems form a robust barrier that improves wear resistance and limits metal diffusion. Additionally, our 672 High-Speed Bright Acid Copper Plating provides a highly ductile base layer for excellent thermal conductivity and adhesion across multi-layer coatings.
To meet growing demand for eco-friendly processes, we also offer 8315 Alkaline Cyanide-free Bright Zinc Plating and trivalent passivation technologies, such as our 216 Iridescent Passivation and ZN-318 Blue Trivalent Zinc-Nickel Passivation. These chemistry systems help manufacturers eliminate hazardous substances from their workflows without sacrificing corrosion resistance.
How our chemistry aligns with international manufacturing standards and production lines.
Electric vehicles require reliable power transmission. Our high-conductivity copper underlayers, semi-bright nickel barriers, and tin coatings are optimized for busbars, battery terminals, and high-voltage connectors. These coatings offer low contact resistance and protect against corrosion under thermal cycling.
For printed circuit boards and leadframes, our tinning additives ensure precise, uniform deposits that prevent bridging and tin whiskers. Our chemistry supports high-aspect-ratio plating, providing consistent coverage in through-holes and blind vias to ensure reliable electrical connections.
Working with major electronics manufacturers like Foxconn, we provide high-durability plating chemistry for multi-pin connectors, USB-C ports, and internal brackets. These solutions offer consistent solderability and corrosion resistance, helping extend device service life.
Our formulations align with RoHS directives, REACH regulations, and EPA guidelines, helping facilities phase out toxic chemicals.
The global metal finishing industry faces increasingly strict environmental regulations. The transition away from hexavalent chromium, lead, and cyanide chemistry is essential for modern compliance.
At Suzhou Hiyie Chemical, we focus our research on developing stable, biodegradable organic complexers, cyanide-free plating baths, and trivalent passivates. Through our joint research programs with universities in Shanghai and Wuhan, we test new organic molecules to ensure our additives perform well under a wide range of current densities without releasing toxic byproducts.
Our 8315 Alkaline Cyanide-free Bright Zinc Plating and ZN-318 Blue Trivalent Passivation processes offer drop-in replacements for traditional baths. They help plating facilities meet environmental standards while maintaining excellent corrosion protection and deposition efficiency.
Technical insights and troubleshooting tips from our engineering and support teams.
The latest technological milestones and corporate announcements from Suzhou Hiyie Chemical.
"The Snake ushers in blessings as we bid the old year farewell; The Horse brings spring as we embark on a new journey." As we enter a new business cycle, Suzhou Hiyie Chemical is expanding its collaborative research networks with national universities. This initiative aims to accelerate the commercialization of our green plating additive lines, including acid copper carriers and high-stability zinc passivations.
Browse additional specialized additives, carriers, and passivates to complete your metal finishing processes.
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