SZNW Nanotechnology Group is devoted to developing world-leading technologies for the production of the highest quality and the widest selection of uniformly sized nano- and microspheres (microparticles). The company is capable of supplying monodisperse particles of almost any size ranging from 5 nanometers to 1000 microns of different materials, structures, and functionalities. SZNW provides a broad spectrum of products including high performance chromatography media, solid phase extraction (SPE) sorbents, particle size standards, magnetic particles, LCD spacer, ACF conductive particles, and various other customized functional microsphere products.

SZNW has built “state-of-the-art” 13000 square-meter manufacturing facilities, equipped with the most advanced analytical instruments and reliable quality control system to guarantee high quality and consistent performance of products sold worldwide.

The high performance monodispersed microsphere products include:

Silica Chromatographic media (Silica Gel)

Polymeric Chromatographic media

Ion Exchange Chromatographic Media

Hydrophobic Interaction Chromatographic Media

Protein A Affinity Media

Gel Permeation Chromatography Media

Carbohydrate Analysis Media

Prepacked HPLC columns

Solid Phase Extraction Sorbents

Polystyrene Particle Size Standards

Silica Particle Size Standards

Magnetic Microspheres

Polymer Spacers

Silica Spacers

Nickel-plated Resin Microspheres

Gold-plated Resin Microspheres

Light Diffusing Microspheres

Latex Particles

...

Chromatography Media

SZNW produces the most complete range of monodisperse chromatographic media and SPE sorbents based on acrylic polymers, polystyrene or silica. The spherical and monodisperse sorbents with precisely controlled uniform particle size, optimized pore structure and surface functionalization provide high resolution, excellent selectivity, low back pressure , high recovery yield, and exceptional batch-to-batch reproducibility. SZWN is one of the few companies having capability to manufacture both Polymer and silica based chromatography media for reversed phase, normal phase, ion exchange, hydrophobic interaction, affinity and Protein A affinity chromatographic separations. Both monodisperse non-porous and porous (100 Å, 300 Å, 500 Å, 1000 Å) media with a size selection as small as 1.7μm for UPLC, and as large as 100μm for process-scale chromatography, are available from SZNW.

LCD Spacer

SZNW provides a complete line of high quality resin and silica spacers wiith precisely control the particle size, particle size distribution, hardness and surface characteristics. NM Spacers composed of highly crosslinked polymer or silica have very tight particle size distribution, and excellent resistance against heat, cold and chemicals.

Conductive Microspheres

SZNW provides high quality nickel-plated resin particles and gold-plated resin particles for microelectronic interconnection. These electrically conductive particles are dispersed in an adhesive binder as anisotropic conductive film (ACF) or anisotropic conductive paste (ACP) employed in the LCD assembly process. SZNW's conductive products have outstanding size uniformity, high conductivity, appropriate elasticity and strong adhesion between the metal layer and the resin core. The products are designed for fine pitch electrode coupling in electronic products such as COG and used for vertical conduction between two glass plates on LCD panel.

Magnetic Particles

SZNW provides a series of magnetic particles with narrow size distribution and super-paramagnetism. These small magnetic particles have a resin core and an iron oxide layer sandwiched between the core and an outermost layer. The outermost layer of the particles is inorganic SiO2 or a functionalized polymer which completely covers iron oxide to prevent it from potentially incompatible interaction with biomaterials. These magnetic particles have a very good dispersity with well controlled particle size and narrow particle size distribution.

Particle Size Standard

SZNW supplies a full range of size standard microspheres based on both silica and polystyrene. All of them are determined by Coulter Counter, DPS Disk Centrifuge, Dynamic Light Scattering, TEM, SEM, and Optical Microscope against Standard Reference Materials (SRMs) from the National Institute of Standards and Technology, US Department of Commerce(NIST). The particle sizes of these microspheres are therefore traceable to globally recognized primary standards of NIST SRMs.

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