• Stable Product Quality
    Stable Product Quality
    Stable Product Quality

    Fixed raw materials suppliers like Jushi smc roving and chopped strand, resin from AOC and our own resin factory with capacity 300000 tons

  • Advanced  Machine Lines
    Advanced  Machine Lines
    Advanced Machine Lines

    Advanced SMC machine lines with max width 1.2m, 4 sets BMC lines, top 3 in China made by ourselves, fully automatic to ensure the formulation stability by lot

  • Professional Team
    Professional Team
    Professional Team

    Union compsites, as a model enterprise with national technology patents, has been providing SMC and BMC Solutions to customers from 50+ countries.

SMC (Sheet Moulding Compounds)

Union sheet moulding compound based on NPG/ISO/ORO unsaturated polyester resin/ Vinyl ester resin or Epoxy resin, fiberglass woven roving or chopped strand or carbon fiber reinforced, contains mineral fillers and other materials.
SMC materials are thermosets and contain glass or carbon reinforcement levels between 18 and 60 percent. The longer fibres in SMC result in better strength properties.

Get A Quote

BMC (Bulk Moulding Compounds)

Bulk Molding Compound (BMC) is a combination of fiberglass chopped strand 6 or 12mm with resin as a bulk prepreg. It contains higher fillers. The reinforcement is generally between 10% and 20%, sometimes up to 28%. BMC is suitable for complex components such as electrical equipment, car components (headlamps) and housings for electrical appliances and tools in large industrial volumes.
Bulk Molding Compound with excellent electrical properties, high strength, and different flame rating HB/V-1/V-0. Good moldabi-lity and produces molded parts with excellent surface finish.

Get A Quote
Application Products
  • SMC 6001
    SMC 6001

    FRP Fan cover

  • SMC 6001
    SMC 6001

    Meter box

  • SMC 6002
    SMC 6002

    Water Tank

  • SMC 6002
    SMC 6002

    Rubbish Bin Cover Box

  • SMC 6004
    SMC 6004

    Yutong Bus Parts

  • SMC 6006
    SMC 6006

    White Auto Parts

  • SMC 6006
    SMC 6006

    Red Truck Panel

  • SMC 6006
    SMC 6006

    Air conditioning cover

  • SMC 5005
    SMC 5005

    YUTONG Buses Parts

  • SMC 5001
    SMC 5001

    Electrical Box

  • SMC 5005
    SMC 5005

    YUTONG Buses Parts

  • SMC 8002
    SMC 8002

    basin

  • SMC 8002
    SMC 8002

    Bathroom table-board

  • SMC 8002
    SMC 8002

    panel

  • SMC 8002
    SMC 8002

    panel

  • SMC 8002
    SMC 8002

    wall panel

Application

Auto Mobile

Electrical

Construction

Industry

Special Application

High strength and low density,excellent surace quality and paintability also on-ine, low tolerances and thermal dilatation, high thermadl and chemicalresistance, low investments.

Non-shrinkage

Low-shrinkage

High Strength

High Gloss Level

High Tinting Strength

Case

Auto parts

Auto parts

Auto parts

Vehicle structural parts

Red truck panel

Auto parts

Auto parts

Vehicle parts

High strength and low density,excellent surace quality and paintability also on-ine, low tolerances and thermal dilatation, high thermadl and chemicalresistance, low investments.

Cost-effective

Low-shrinkage

High Tinting Strength

Case

Electric meter box

Insulated electrical appliances

Electric meter box

Electric meter box

High strength and low density,excellent surace quality and paintability also on-ine, low tolerances and thermal dilatation, high thermadl and chemicalresistance, low investments.

SMC Code

Cost-effective

Non-shrinkage

Low-shrinkage

High Gloss Level

High Tinting Strength

Case

Bathroom chassis

Bathroom table-board

Bathroom building materials

High strength and low density,excellent surace quality and paintability also on-ine, low tolerances and thermal dilatation, high thermadl and chemicalresistance, low investments.

Cost-effective

Non-shrinkage

Low-shrinkage

High Strength

Glass A surface performance

High Tinting Strength

Case

Manhole Covers

Petroleum/ Coal industry

FRP Fan cover

Foot pedal

Machine cover

Medium parts

Manhole covers

Air conditioning cover

Air conditioning cover

High strength and low density,excellent surace quality and paintability also on-ine, low tolerances and thermal dilatation, high thermadl and chemicalresistance, low investments.

SMC Code

Low-shrinkage

High Strength

Fire Resistance

High Flame Retardant

Chemical Resistance

Less Smoke

Case

White Civil air defense door

Subway insulated rail

Railway/ Medical equipment

Material Performance

High Cost Performance

High Cost Performance

The quality is superior to other peers, which reflects in lower price than the industry and outstanding feedback from customers.Typical fields:

Zero Shrink

Zero Shrink

SMC material exhibits no shrinkage during curing process, ensuring dimensional stability.Typical fields: Meter box

Low Shrink

Low Shrink

SMC has minimal shrinkage upon curing, resulting in reduced distortion and improved accuracy.Typical fields:

High Strength

High Strength

SMC material possesses excellent strength properties, providing structural integrity and load-bearing capabilities.Typical fields:

Glass Fiber Lines Free of Paint

Glass Fiber Lines Free of Paint

High strength aviation material SMC (glass fiber reinforced unsaturated polyester plastic) by high temperature molding, long service life, anti-aging, anti-radiation. The surface does not need any protection owing to all-weather protection function.Typical fields:

High Flame Retardant

High Flame Retardant

The flame retardant performance can reach FVO level, and the flue gas toxicity level is quasi-safety level. Even if there is an open flame, it will extinguish itself in a very short time, even at high temperatures, it will not deform or melt droplets.Typical fields:

Corrosion Resistance

Corrosion Resistance

It can be used in acid, alkali, salt and other harsh environment for a long time on account of good corrosion resistance. Moreover, It can effectively resist the corrosion of seawater, gasoline, alcohol, electrolytic salt, acetic acid, hydrochloric acid, sodium potassium compounds, urine, asphalt, various acid-base soil and acid rain. The product itself has good anti-aging performance, and the surface of the product has a protective layer with strong ultraviolet resistance, and the double protective products have higher anti-aging performance.Typical fields:

Tint

Tint

Coloring refers to the application of color to SMC finished products, which embellishes or adds highlights to the appearance, making it more vivid, interesting or attractive.Typical fields:

A Grade Surface

A Grade Surface

Gloss is the size of the mirror reflection ability of the surface of the SMC finished product to the light, GU is the unit of gloss, gloss as the surface attribute of the object, depends on the surface of the mirror reflection ability of the light, the so-called mirror reflection refers to the reflection Angle and the Angle of incident equal reflection phenomenon. Glossiness is a physical quantity that evaluates the ability of a material's surface to reflect light under specified conditions. Gloss value represents a mirror reflection ability of the surface of the object to the light, the greater the value, the stronger the reflection ability of the light, the brighter the surface of the object seen by our human eyes, and the reflective object can be seen through the surface of the object.Typical fields:

Why Choose Union?
Our experienced engineering and support teams work hand-in-hand with customers to customize products based on their needs.
  • Supply Chains
  • Advanced Technology
  • Reasonable Price
  • Excellent Service
100
100
Supply Chains
The supply chain is among the top 10 in the industry Brand guarantee, fast and reliable product delivery, original packaging from brand factory.
Read More
Product R&D capabilities
Product R&D capabilities
Customer sample analysis
We can point out customers' potential problems and provide better solutions and products based on the customer's process flow. We recognize that we only win when all of our customers receive the best solutions and support.
Read More
Reasonable Product Prices
Reasonable Product Prices
Price advantage
We have a high-quality supply chain to ensure product price advantage. After the order is confirmed, if the price of materials increases, theorder price will still be maintained; if the price of materials decreases, the price will be reduced proactively.
Read More
Product Support
Product Support
Customized products
UNION can provide product customization according to customers different needs and processes.
Read More

Customer Review

SMC5001HB for Electrical Box
We delivered 50kg free samples for a customer who make electrical box The following is customer's test result.
We customize the color based on RAL color code, reach the electrical part standard, such as impact and fire resistant standard.
Solve Technical Problems for the Customer
The customer had the production problems when they make meter box by the current SMC supplier. We suggest the suitable technical guide and give the suggestions about how to lay our SMC correctly.
SMC materials
Frequently Asked Questions
UNION is committed to meeting diverse customer needs and can customize products. Tell us your ideas and needs. We can customize your exclusive business so you can profit from it.
  • 1. Why do bubbles appear on the surface?
    a. High mold temperature will lead to bubbles on the surface of the final product. 
    b. Also, reducing the closing speed of the mold is helpful to the air discharge in the  mold cavity.
  • 2. How to improve surface quality?
    a. Appropriately reducing the feeding area of SMC in the mold.
    b. Once the aluminum film is removed, use the SMC material ASAP.
  • 3. When will SMC be cured easily?
    After SMC is placed in the mold, the mold should be closed within 1 min @145℃.
  • 4. Storage conditions?
    Storage conditions below 25℃, avoid light, waterproof storage.2-3 months.
  • 5. Can you make the same color of our SMC product?
    Yes. We can customize as your requirement. For color, we use the lastest version of RAL color code. Rugular color example:
    RAL7035 Light Grey
    RAL1015 Light Ivory
    RAL 9004 Signal Black
    If you have strict standard for the color, you can send a small sample piece, then we can compare and provide to you.
    How can u make sure the different batches of your product have the same color
    Our QC dept. have spectrocolorimeter to make sure the final product of different batches product have a ΔE < 2.
  • 6. What is the shelf life of SMC?
    Usually you can keep 5~6 months from production to use, if in the suitable storage condition. Please store it in and keep in a cool, ventilated and dry place below 25°C. Avoid fire, keep away from heat and radiation sources. Avoid water and prohibit exposure to sunlight and open storage.
    For foreign customers, we will use Reefer container (18C temperature).
    Once you open the package, please use it all during three days.
  • 7. How do you pack the SMC?
    We use zig-zag way to load into the pallet.
    Pallet size: 1.06*1.06*0.7meters, 1000kg per pallet. (±5% difference)
    In 20ft Reefer container, load 20000kg (20tons), 20pallets.
    The materials are sealed with multi-layer PP film packaging, plus aluminium-plated film to prevent the Light Source. The outer layer is packed in multi-layer cartons and fumigation-free pallets.
  • 8. Can we get samples?
    Yes. We can provide free sample. (within 10kg)
  • 9. What is the delivery time?
    Usually 7 days from other to delivery.
Let's Get Started on Your Custom SMC Material Project
If you are looking to get a quote on your project or you need more information about our team and services, we encourage you to get in touch with us today.
UNION COMPOSITE
Union Composites Changzhou Co., Ltd. is situated in Changzhou, a picturesque water town located in the southern region of the Yangtze River. As an export-oriented company, specializing in composite materials, 90% of our products are exported to Europe, Asia, America, Middle East and Africa.
Since established in 2012, our company has been adhering to the corporate mission of "intelligent manufacturing in China to the World", and is committed to providing customers with high-quality, high-performance and comprehensive composite material solutions.