Powering Transformers with Premium Insulation Materials
China's leading manufacturer of electrical insulation paperboard, presspaper and precision-machined components — serving transformer and power-equipment manufacturers worldwide since 2009.
Insulation Paperboard
Insulation Paper
Formed Parts & Rings
Electrical Laminated Wood
Engineered Materials for Transformer Insulation
Electrical Insulation Paperboard
0.8 – 5.0 mm · T3 / T1 / T4
High-density pressboard sheets for barriers, cylinders, spacers and structural insulation. Premium, Grade A, Natural A-B-C, Dyed and Neutral variants.
View CategoryElectrical Insulation Paper
0.1 – 0.6 mm · 1100 mm Rolls
Roll and sheet formats for layer, turn and slot insulation. Selected Premium to Natural grades, with dyed options in red, cyan, blue and gray.
View CategoryInsulation Components & Formed Parts
CNC-Machined · OEM to Drawings
Transformer board components, angle rings, lead exits and laminated wood — custom-manufactured per customer drawings and tolerances.
View CategoryElectrical Laminated Wood
Cross-Laminated Veneer · 10 – 120 mm
Densified birch and beech veneer boards for pressure rings, step blocks and coil supports — high mechanical strength with excellent oil absorption in transformer oil.
View Category
Manufacturing Confidence, Batch After Batch
- ISO 9001 Certified · IEC Standard Compliant
Documented quality system with traceable production control.
- 9 Dedicated Production Lines + In-House R&D Lab
20,000 t paperboard and 8,000 t paper annual capacity.
- Fumigation-Free Export Packaging
ISPM 15 compliant and ocean-freight ready.
- Trusted by All Major Chinese Transformer Manufacturers
China's largest ≤66 kV distribution paperboard supplier.
- Military-Grade Neutral Paperboard Supplier
Qualified for defense and specialized applications.
Partnering with Industry Leaders
GuangXin insulation materials are specified by transformer manufacturers and industrial equipment producers across China and global export markets.
Built for Demanding Electrical Systems
Distribution Transformers
≤ 66 kV
China's largest supplier of 0.8–5.0 mm insulation paperboard for this voltage class.
ApplicationsPower Transformers
1000 kV AC / ±800 kV DC
Structural insulation and lead-exit systems for high and ultra-high voltage designs.
ApplicationsCapacitors & Motors
0.1 – 0.6 mm
Thin presspaper for capacitor dielectric layers, motor slots and winding insulation.
ApplicationsIndustrial Composites & Packaging
Lamination · Gaskets · Packaging
Board for composite lamination, sealing, heavy-duty packaging and defense uses.
ApplicationsNine Lines. One Standard.
Six paperboard lines, three paper lines and a CNC machining workshop on a 60-mu site — with 100% inspection on dielectric strength, density, moisture and dimensional tolerance.
Need a Quote?
Tell us your specifications — grade, thickness, dimensions and quantity — and our export team will respond within 24 hours.
