1.basic electrical insulating materials and general methods, including electric strength , insulation resistance and volume ( surface ) resistivity, dielectric constant and dielectric loss factor , arc resistance , resistance to tracking and erosion resistance, tracking index , relative than tracking index , and electrical insulating materials and heat resistance.

2.electrical insulating varnish ( including printed circuit board conformal coatings ) , can be used for electrical insulation and adhesive polymeric resin .

3.electrical insulating resin impregnated fiber products ( including linoleum, painted silk , hoses, woven tapes , banding with no latitude , networks and prepreg , etc. ) .

4.electrical insulating laminated products , wound products, vacuum pressure dipped products and lead to pull products (including laminates, laminated tubes , laminated rods , Pipe and pultruded profiles, etc. ) .

5.electrical insulating plastic products ( including molded plastic , silicone rubber , etc.) .

6.electrical insulating mica products ( including mica paper, mica tape , mica plate and mica foil) .

7.electrical insulating tape , film, soft composite materials (including polypropylene film, a polyester film, a polyimide film, a metal film , an insulating adhesive film , a soft pressure-sensitive adhesive tape and a composite material, etc.) .

8.electrical insulation fiber products ( including electrical cellulose paper , laminated cardboard , laminated cardboard, corrugated cardboard , steel, paper , synthetic paper , paperboard aramide fibers , wrinkles insulation paper, adhesive paper insulation , insulation shield paper and laminated wood for electrical purposes , etc.) .

9.Insulating liquid ( transformer oils, synthetic aromatic and silicone oil, etc.) .