With strong in-house R&D capabilities we are able to design and develop dry film products to specifically match our customers' requirements for various processes such as Chemical Milling and Electroforming etc.

For further information, please contact Mr. Stephen Wang：

stephen_wang@email.eternal-group.com

For further information, please contact Mr. Changgin Huang：

changgin_huang@email.eternal-group.com

For further information, please contact Mr. Changgin Huang：

changgin_huang@email.eternal-group.com

Polyimide (PI) materials have the characteristics of adjustable CTE (coefficient of Thermal Expansion), low CHE (Coefficient of Humidity Expansion), low stress, high solid content, low viscosity, and high transparency. Polyimide (PI) materials can be classified into two kinds: PAA (Polyamic acid) and SPI (soluble Polyimide), both of which possess excellent thermal stability, electrical properties, and chemical endurance.

PAA ( Polyamic Acid)
．Adjustable CTE ( 3.0 ~ 56 ppm/oC )
．Low Stress ( 2 ~ 18 MPa )
．Low CHE ( < 15 ppm/RH% )
．High Solid Content ( 20 ~ 35 % )
．Low Viscosity ( 1500 cP ~ 5000 cP )
PAA can be applied to passivation layer, buffer layer, α-particle barrier, dry-etch mask, micro-machines and interlayer dielectrics in the semiconductor manufacturing industry. Further applications include Package, Magnet wire, PCB, Sensor and Separation membrane, base film, and coverlay.

SPI ( Soluble Polyimide)
With low post-cure temperature, SPI receives great acceptance in the FCCL, Active and Passive Component, Optical material, and Package industries. Unique characteristics of SPI include:
1.Low Post-Cure Temperature（≦200 oC）
2.High Transparency (90％, 10um@400nm)
3.Anti-Arc Application (2~3Kv, 85 oC /85％RH)

Eternal is well equipped to meet customers' special application requirements.

For further information, please contact Mr. Stephen Wang.

stephen_wang@email.eternal-group.com

Advanced liquid type photosensitive polyimides possess excellent thermal stability, chemical endurance as well as good mechanical and electrical properties. These materials include PAA (Polyamic Acid) and SPI (Soluble Polyimide).

PAA Type (Pure Polyimide, High performance)
PAA can be applied to passivation layer, buffer layer, α-particle barrier, dry-etch mask, micro-machines and interlayer dielectrics in the semiconductor manufacturing industry. Further applications include Package, Magnet wire, PCB, Sensor and Separation membrane, base film, and coverlay.
Eternal is well equipped to meet customers' special application requirements.

SPI Type (Low Post-Cure Temperature)
With low post-cure temperature, SPI receives great acceptance in the FCCL, Active and Passive Component, Optical material, and Package industries. SPI type of materials can also be adopted for Thermal Curable and UV Curable products.

Eternal is well equipped to meet customers’ special application requirements.

For further information, please contact Mr. Stephen Wang.

stephen_wang@email.eternal-group.com

Advanced Dry Film photosensitive polyimides have excellent thermal stability, chemical endurance, as well as good mechanical and electrical properties. These materials include PAA (Polyamic Acid) and SPI (Soluble Polyimide).

Dry Film PAA Type (Pure Polyimide, High performance)

This product is used to replace the adhesive coverlay to enhance the Flexural Endurance, Thermal Stability, and Fine Pitch application.

Dry Film SPI Type (Low Post-Cure Temperature)
This product can be used as photosensitive protecting material for FCCL or for other special purposes.
Eternal is happy to accommodate our customers’ special application requirements.

For further information, please contact Mr. Stephen Wang.

stephen_wang@email.eternal-group.com

For toll precision coating services, Eternal Chemical Co Ltd can offer the following:

Class 100 / 1000 / 10000 clean rooms

Diverse coating systems coupled with extensive knowledge and awareness required for precision toll coating

Comprehensive production facilities covering:
Resin:
With almost 60 years production experience, Eternal can synthesize resins for our customers.
Coating:
Our coating lines combine on-line defect detection and UV curing systems.
Converting:
Slitting and punching requirements can be incorporated to meet end user specifications.
Quality Testing:
Precise thickness gauge, GC and SEM testing are available to ensure all products meet both internal and external test criteria and requirements.

A strong global supply chain already exists within the PCB industry with production factories based in:
Taiwan
China (South / East / Northeast)
Thailand
North America
Major sales office are established in:
Taiwan (Taoyuan, Kaohsiung)
China (Guangzhou, Kunshan, Yingkou)
Hong-Kong, Thailand and Singapore
United States and Netherlands
Japan and Korea

For further information, please contact Mr. Yueway Lin.

yueway_lin@email.eternal-group.com