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MF series are high performance ultraviolet visible spectrophotometers manufactured by Shanghai Yoke Instrument Co., Ltd.
The product lineup includes single beam, split beam and double beam optical system variants

Equipped with a large 11 inch color touch screen interface.
Supports multiple test modes: photometric measurement, quantitative measurement, kinetics assay, spectrum scan, DNA protein concentration testing and multi wavelength measurement.
Max spectral scanning speed reaches 30000â?¯nm min.
Builtâ??in complete GLP/GMP functions including user permission management, audit trail tracking and operation log inquiry.

Rich data output options: USB, cloud connectivity, Bluetooth 3.0, WiFi; real time data delivery via Email and mobile SMS.
Directly connect to laser printer over WiFi or thermal printer via Bluetooth.
Adopts imported tungsten deuterium lamps and silicon photodiode detector, 1200 lines/mm grating. Wavelength range covers 320-1100 nm or 190 110 nm according to model.
A broad selection of optional accessories is available: auto 4 cell 5 cell 8 cell holders, film holder, tube rack, integrating sphere, reflection attachment, peltier temperature controlled sipper system, and 21 CFR compliant software.
Operates on AC 110-220V, 50-60Hz universal power supply.

Long-term supply of high-grade tantalum, niobium

We operate a hydrometallurgical smelting plant in Sihanoukville, Cambodia, specializing in the production of tantalum, niobium, tin, and tungsten metals. Our monthly output of finished products ranges from approximately 800 to 1,200 tons. Please feel free to contact me if you are interested, or you are welcome to visit our plant in person.

Cyclopentane Production Processes
There are two technical routes for the industrial production of cyclopentane: direct separation and purification from ethylene cracking by-products, and synthesis via the depolymerization and hydrogenation of dicyclopentadiene.

Separation Route from Cracker C5 Fractions (Separation Method)
Ethylene cracking generates large quantities of C5 fractions containing cyclopentane (typically accounting for 6%â??24% of the fraction). Industrially, extractive distillation is commonly employed; specific solvents (such as dimethylformamide or N-methylpyrrolidone) are added to alter the relative volatility of the components, followed by multi-stage rectification to achieve purification.

Dicyclopentadiene Depolymerization-Hydrogenation Route (Synthesis Method)
This is currently the mainstream process for producing high-purity cyclopentane. Dicyclopentadiene (DCPD), abundant in ethylene cracking by-products, serves as the raw material and undergoes two core reactions to yield cyclopentane: first, depolymerization, where DCPD breaks down into cyclopentadiene monomer (CPD) at high temperatures; second, hydrogenation, where CPD reacts with hydrogen to form cyclopentane.

Other Unconventional Routes
A route involving the extraction of cyclopentane from non-aromatic oilsâ??by-products of the coal chemical industry. Coal-based non-aromatic oils can contain up to approximately 33% cyclopentane. The process involves enrichment via rectification, followed by the removal of impurities such as benzene and n-hexane using molecular sieves or activated carbon adsorption; the final product meets industrial-grade standards.

Applications of Cyclohexane in the Plastics Industry
Cyclohexane is a very important solvent and precursor in the plastics industry.
As a powerful solvent this is the most direct and widespread application of cyclohexane in plastics processing. It is mainly used as a solvent for non-polar or weakly polar plastics.

Processing of Polystyrene (PS) and Expanded Polystyrene (EPS):

Cyclohexane is an excellent solvent for PS. In the production of EPS (commonly known as "Styrofoam"), cyclohexane is used as a physical blowing agent. Under heating and pressure, PS granules absorb cyclohexane. When injected into a mold and heated, the cyclohexane vaporizes, causing the granules to expand and fuse together, forming a lightweight, porous foam product.

Surface Treatment and Bonding of Plastics:
For some non-polar plastics that are difficult to bond (such as polyethylene PE and polypropylene PP), cyclohexane can slightly dissolve or swell their surfaces, making them rougher and more active. This is often used for:
Surface treatment before bonding to improve the adhesion of adhesives.
Enhancing the adhesion of inks or coatings before plastic printing or coating.
Cleaning and Degreasing of Plastics:
It can be used to remove oil stains, grease, or other non-polar contaminants from the surface of plastic parts.

Cyclopentane is a colorless, transparent liquid

Cyclopentane is a colorless, transparent liquid with a gasoline-like odor and the chemical formula C5H10; it serves as a blowing agent for rigid polyurethane foam.

With a boiling point of 49.3C and a flash point of -37C, cyclopentane is characterized by its low boiling point and high volatility. Its extremely low flash point classifies it as a highly flammable hazardous material, requiring strict control over ignition sources and static electricity during use, storage, and transportation.

Cyclopentane is valued for its versatility, serving as a blowing agent, chemical raw material, solvent, refrigerant, and lubricant. It is a key raw material for the production of eco-friendly products such as refrigerators and freezers and is also used in cold storage facilities and pipeline insulation.

#Expanded Metal Mesh for Air Filter Elements

Galvanized expanded metal mesh is designed for filter support, protection and filtration applications. Made from hot-dip galvanized steel sheet, it is integrally expanded and formed without welding joints. The uniform diamond openings provide high rigidity, good anti-deformation performance and stable air or liquid permeability.


Material & Structure

Hot-dip galvanized steel provides good rust and corrosion resistance in humid, air, liquid and general industrial environments. The one-piece expanded structure has no welded joints or weak points, offering reliable tensile strength, pressure resistance and dimensional stability. It supports pleated filter media, helps prevent deformation or collapse, and maintains stable filter performance.


Filter Applications

Fine expanded mesh can be used as inner backing or support for filter media, while thicker mesh can serve as outer protection, filter tube support or structural skeleton. The open diamond design provides good permeability while protecting filter media from compression and mechanical damage.

Applications include filter cartridges, filter tubes, pleated filter media, dust collector filter cages, HVAC air filters, hydraulic filters, liquid filters, industrial gas filtration and water treatment equipment.


Customization & Processing

Specifications can be customized according to customer drawings and requirements, including sheet thickness, strand width, SWD, LWD, sheet size and open area. Additional processing such as cutting, bending, rolling, edge wrapping and welding is available for filter cylinders, cages and tube supports.


Quality Control & Packaging

We inspect raw materials, expanding processes, dimensions, flatness, mesh opening uniformity, zinc coating, surface condition and mechanical strength to ensure consistent quality. Products are securely packed in export-standard fumigation-free plywood boxes to minimize deformation and damage during transportation.


About HUZE MESH

HUZE is a professional manufacturer of filter support metal mesh, supplying expanded metal mesh, perforated sheet, welded mesh, filter tubes and related filtration accessories. We offer stainless steel, galvanized steel and epoxy-coated mesh with OEM and customized solutions.

We provide stable quality, customized specifications and reliable supply for filter manufacturers worldwide.
janna(at)huzemesh(dot)com www(dot)huzemesh(dot)com

Lost Circulation Material (LCM) - Oilfield / Drilling Grade

We supply Lost Circulation Materials (LCM) from China for oil and gas drilling operations.

Our LCM products are designed to help control and reduce drilling fluid losses into naturally fractured, vugular or highly permeable formations.

Available LCM types include:

Granular LCM
Fibrous LCM
Flaky LCM
Mixed / Blended LCM
Coarse, medium and fine particle sizes
Customized blends according to drilling conditions

Typical applications:
Lost circulation control
Fractured formations
Vugular formations
Highly permeable formations
Wellbore strengthening
Drilling fluid loss prevention

Product specifications, particle size distribution and formulation can be customized according to the customer's drilling requirements.

Packing:
25 kg bags / 500 kg bags / 1,000 kg jumbo bags, or customized packing.

Origin: China

We welcome inquiries from:
Oilfield service companies
Drilling contractors
Drilling fluid companies
Oilfield chemical distributors
Mud chemical importers
Oil and gas operators

Please send us your required specification, estimated quantity and destination port for a quotation.

COA, MSDS, technical data sheet and samples can be provided upon request.

Nepheline Syenite Powder - High Purity, Low Iron

We are a professional supplier of industrial minerals based in Sichuan, China, specializing in high-purity Nepheline Syenite Powder for glass, ceramics, and paint industries.

Product Specifications:

- Al2O: 29.0 - 30.6%
- NaO: 11.3 - 12.9%
- KO: 4.0 - 5.0%
- FeO: 0.21 - 0.32% (as low as 0.21%)
- SiO: 41.9 - 42.9%
- LOI: 3.82 - 6.55%

Particle Size: 200 mesh / 325 mesh (customizable)
Packaging: 1 ton/bag or as per customer request

Key Advantages:
- Low melting point (approx. 1,060C) - reduces energy costs
- High alumina and alkali content excellent fluxing performance
- Ultra-low iron ideal for high-white ceramic bodies and clear glass

Supply Capacity: 1,000 MT/month
Loading Port: Shanghai, China

CNAS-certified lab reports available. Samples provided upon request.

Our transformer insulation pressboard support strips are manufactured using highly refined and purified insulating pressboard to ensure excellent performance in electrical applications. The material is carefully processed to achieve uniform thickness and is free from pinholes, undispersed fiber bundles, and other microscopic defects. This meticulous production process guarantees consistent quality and reliable insulation properties for your transformer applications.

The main types of Pressboard Support Strips:

R-Chamfered Support Strip / Radius Edge Support Strip

Non-Chamfered Support Strip / Square Edge Support Strip

Right-Angle Edge Support Strip



Applications and Functions of Insulation Support Strips:

â??Oil-Immersed Transformers:

Winding Fixation: Work together with upper and lower positioning rings and columnar spacers to create a robust mechanical support system, preventing winding short circuits or deformation.

Cooling Optimization: The spacing between insulation support strips directly influences oil flow. Elongated hole designs (e.g., 20-30 mm spacing, 5-8 mm diameter holes) increase the heat dissipation surface area.

Dry-Type Transformers:

Utilize high-temperature-resistant materials (e.g., Class F, 155C) to avoid softening or deformation under thermal stress.

â??Special Scenarios:

High-Humidity Environments: Employ anti-hygroscopic materials such as polyimide composites.

High-Frequency Transformers: Optimized dielectric properties help minimize partial discharge risks.

Transformer insulation pressboard is a rigid cellulose board used for barriers, spacers, cylinders and other structural insulation parts in oil-filled transformers. It offers good mechanical strength, dielectric insulation and oil compatibility.

Why Pressboard Is Used in Transformer Insulation

In transformers, insulation is not only an electrical issue. It is also a structural and mechanical issue.

That is why pressboard transformer insulation is widely used. Compared with thinner insulation papers, pressboard provides:

higher mechanical strength

better dimensional stability

stronger support for internal parts

good dielectric insulation

good performance in oil-immersed transformer systems


Heat-resistance: Class A 105â??

B+ & A Quality Thickness(mm): 0.8/1/1.5/2/2.5/3/4

Size(mm): 1000x2000



A+ Quality Thickness(mm): 0.8/1/1.5/2/ 2.5/ 3/ 4

Size(mm): 1000x2000 1050X2000 1400X2500


G4 Quality (high density)Thickness(mm): 1-50

Size: 1050X2000 2100x3200 2200x4400

Link: https://www.paperinsulation.com/insulation-paper/insulation-pressboard.html
Email: inquiry@chrcn.com

Diamond dotted paper (DDP) is an electrical insulation presspaper partially coated with heat-curable epoxy resin dots arranged in a diamond pattern. During coil drying / oven heating, the resin dots soften and cure to bond adjacent layers, helping improve winding mechanical stability in transformer manufacturing.

DDP insulation paper is commonly used as interlayer insulation between coils in oil-immersed transformers, where controlled bonding is needed without sacrificing oil impregnation and drying efficiency.
Chengrui Insulation can provide DDP insulation paper in rolls with different thicknesses, widths, and slitting options according to production requirements. Our team can help confirm roll size, resin dot pattern requirements, packing method, sample availability, and bulk order delivery schedule.

Type: Insulation paper

Heat resistance: Class A 105�°C

Thickness: 0.08mm, 0.13mm, 0.15mm, 0.17mm, 0.20mm, 0.25mm, etc

Width: 960mm, 1000mm, 1100mm, 1300mm or customized

Color: Natural

COVALVE API 600 WCB Cast Steel Flanged Gate Valve is designed for reliable on-off isolation in oil, gas, water, steam and general industrial pipeline systems.

The valve features an ASTM A216 WCB cast steel body, bolted bonnet, wedge gate, OS&Y rising stem and flanged end connections. The rising stem provides clear visual indication of the valve position, while the straight-through flow passage helps minimize flow resistance when the valve is fully open.

Main Specifications:

Product Type: Cast Steel Wedge Gate Valve
Design Standard: API 600 / ASME B16.34
Body Material: ASTM A216 WCB Cast Steel
Structure: OS&Y Rising Stem, Bolted Bonnet
Connection: Flanged RF or RTJ
Face-to-Face Standard: ASME B16.10
Size Range: 2 to 48 inches / DN50 to DN1200
Pressure Rating: Class 150 to Class 2500
Operation: Handwheel or Gearbox
Applicable Media: Water, Oil, Gas and Steam
Inspection and Testing: API 598

The valve is suitable for petroleum, natural gas, petrochemical, power generation, water treatment and other industrial applications. It is intended for fully open or fully closed service.

Different sizes, body materials, trim configurations, pressure classes, flange standards and operation methods can be supplied according to project requirements.

High Speed Production: Achieves 1000 pcs/min for efficient wire nail manufacturing.
Durable Components: Equipped with high-quality motor, gear, and bearing for long-lasting performance.
Flexible Voltage Options: Operates on 220V and 380V for versatile use across different locations.
Wide Nail Diameter Range: Suitable for nails from 1.2mm to 2.8mm, catering to various applications.
Reliable Warranty: Enjoy a 1-year warranty for peace of mind.
Core components- PLC, Engine, Bearing, Motor, Gear
Machinery test report- Provided
Warranty- 1 Year
Key selling points- High Productivity
Video outgoing-inspection- Provided
Production capacity- 1000 pcs/min
Power (kw)- 7
Place of origin- Anhui, China
Weight (kg)-3000
Brand name- SSS
Advantage- High Working Speed
Nail type- Smooth nail body ,ring type nail body ,screw type nail body
Nail Diameter- 2.0mm-3.8mm
Nail length- 45mm-90mm
Nail Head- 5-9mm
After-sales Service Provided
Applicable Industries- Building Material Shops Nail Factory, construction works