Fish paper

When evaluating Fish Paper, you must prioritize dielectric strength, which typically ranges from 200 to 400 Volts per mil. Ensure the material thickness is precise, as standard industrial applications require tolerances within ±5%. Additionally, verify the mechanical strength, specifically tensile strength (often exceeding 8,000 psi), to ensure it can withstand the physical stresses of motor winding or transformer assembly without tearing.

For the North American market, UL 94V-0 or 94HB flammability ratings are critical for fire safety. In the EU, products must comply with RoHS (Restriction of Hazardous Substances) and REACH regulations to ensure the absence of toxic chemicals. Always request a Certificate of Analysis (COA) from the supplier to confirm the material meets ASTM D710 standards for vulcanized fiber.

Fish Paper is hygroscopic, meaning it absorbs moisture. High-quality sourcing requires a moisture content balance of 5% to 8%. If the moisture is too high, the insulation resistance drops; if too low, the paper becomes brittle and prone to cracking. Ensure the supplier uses moisture-proof vacuum packaging for cross-border transit to maintain material integrity.

It is primarily used for slot insulation in electric motors, gaskets in electrical appliances, and arc shields in circuit breakers. Because of its excellent formability and punching properties, it is also a top choice for lithium battery pack insulation to prevent short circuits between cells.

Always utilize Made-in-China.com's Secured Trading services to protect your payment until the goods are verified. Request a pre-shipment inspection (PSI) by a third party like SGS or Intertek to test the breakdown voltage and density before the balance is paid. This prevents the common risk of receiving 'recycled fiber' instead of 'virgin vulcanized fiber'.

Focus on volume-based pricing tiers. For orders exceeding 500kg to 1 ton, you can typically negotiate a 10-15% discount. Additionally, negotiate for custom slitting services to be included in the unit price, which reduces your secondary processing costs. Ask for free samples (freight collect) to verify the folding endurance before committing to a bulk contract.

Fish Paper is sensitive to humidity and pressure. Insist on seaworthy packaging, including silica gel desiccant packs inside heavy-duty plastic wrapping, and edge protectors on pallets to prevent deformation. Specify FOB (Free On Board) terms if you have a reliable freight forwarder who understands the handling of sensitive electrical insulation materials.

Prioritize Audited Suppliers on Made-in-China.com, as these companies have undergone rigorous on-site verification of their production facilities and business licenses. Avoid direct wire transfers to personal accounts; always use official corporate bank accounts listed on the platform to ensure legal recourse in case of disputes.