Every batch leaves with test evidence.
Electrical, mechanical, thermal and physical verification for the full insulation range — from cable paper and pressboard to laminated wood, mica and machined parts. Testing is part of production, not an afterthought.
Inside the testing center
All eight instruments, shown together — click any card for its full test scope.
Vacuum Drying Oven · SZF-6050-LA
Controlled vacuum drying for sample conditioning, moisture-content determination and damp-heat aging pre-treatment — the first step before meaningful electrical or mechanical data can be produced.
Microcomputer Tearing Tester
Tearing strength and tear index for thin, flexible insulation — the toughness values that decide whether cable paper, crepe paper, films and tapes survive winding, wrapping and forming operations.
Schopper Air Permeance Tester
Air permeance is the practical indicator of how an oil-immersed paper accepts insulating oil. Verified for cable paper, crepe paper, diamond-dotted paper and oil-duct insulation papers.
CMT-100 High / Low-Temperature Universal Testing Machine
Electronic universal frame with environmental chamber: tensile, compression, bending and peel strength plus elongation — measured at room, high and low temperature, across every insulation material we supply.
Bench Breakdown Voltage Tester
Small-sample dielectric strength and short-time breakdown voltage — the fast power-frequency check behind routine factory release of insulation papers, films and thin sheet materials.
Microcomputer Tensile Strength Tester · Paper
Paper-dedicated single-column frame for tensile strength, tensile index and elongation at break of thin insulation papers, thin films and narrow-width insulation tapes.
HV Power-Frequency Withstand Test System
A dedicated test hall with test transformer, grading spheres, shielded insulators and divider unit — long-duration power-frequency withstand, surface discharge, HV aging and type-test verification on large samples.
Box Muffle Furnace
High-temperature resistance furnace for ash content, ignition-residue analysis and thermal decomposition tests on insulation papers, thin composites and mica products.
A datasheet is a claim. A test record is evidence.
Insulation materials live or die by a handful of properties — dielectric strength, mechanical integrity, moisture and impregnation behavior. We keep the instruments for those properties in-house, so batch release, pre-shipment verification and type testing happen under our own roof, on our own schedule.
What each system verifies
Click any instrument to view its core test items and the product families it covers.
Vacuum Drying Oven · SZF-6050-LA
Sample drying and dehumidifying, moisture-content testing and damp-heat aging pre-treatment for every insulation product family.
View test scopeMicrocomputer Tearing Tester
Tearing strength and tear index — the anti-tear toughness of cable paper, crepe paper, thin papers, films and insulation tapes.
View test scopeSchopper Air Permeance Tester
Air permeance as the working indicator of insulating-oil impregnation and penetration performance in oil-immersed papers.
View test scopeCMT-100 Universal Testing Machine
Tensile, compression, bending and peel strength with elongation — including mechanical performance at high and low temperature.
View test scopeBench Breakdown Voltage Tester
Small-sample dielectric strength and short-time breakdown voltage for fast routine factory checks on papers, films and sheets.
View test scopePaper Tensile Strength Tester
Paper tensile strength, tensile index and elongation at break for thin papers, thin films and narrow-width tapes.
View test scopeHV Power-Frequency Withstand System
Test-hall installation for long-duration withstand, surface discharge, HV aging and type-test verification on large samples.
View test scopeBox Muffle Furnace
Ash content, high-temperature ignition-residue analysis and thermal decomposition testing for papers, composites and mica.
View test scopeFrom sample to shipment, in four steps
- 01Condition the sample — vacuum drying and moisture control
- 02Test the required electrical, mechanical or physical property
- 03Compare results against the agreed specification
- 04Release the batch with its test record
What we verify, by product family
Cable, Crepe & Thin Insulation Papers
Tensile index, tear index, air permeance, dielectric strength, moisture and ash — the full paper property set checked in-house.
ReadPresspaper, Pressboard & Laminated Wood
Mechanical strength at temperature, dielectric strength, moisture conditioning and large-sample HV withstand.
ReadMica & Flexible Composites
Breakdown voltage, ash and ignition residue, tensile and peel behavior, plus thermal decomposition analysis.
ReadMachined Parts & Insulating Fasteners
Tensile, bending and compression on finished parts, with high-voltage type testing for large assemblies.
ReadInsulation Tapes & Films
Tensile strength, tearing resistance and short-time breakdown — routine checks on every production batch.
ReadTell us which properties
you need verified.
Name the product, the governing standard and the properties that matter to your application. We will confirm the test plan and supply the batch with its test record.