Product name: F-class membrane insulated wire Conductors using single core and multi-core directly welded insulated wires or Teflon insulated wires Winding wires for special transformers, four layer insulation wire is a reinforced type of insulation wire Application standards：

1. UL 2353 Specific Transformer Winding Wire
2. UL 1950 Information Technology Equipment Safety Standard
3. KS C 3006 Test Method for Porcelain Clad Copper Core Wire and Porcelain Clad Aluminum Core Wire
4. CAN/CSA-C22.2 NO.1-98 Audio, Video, and Similar Electronic Equipment
5. CSA Std C22.2 NO.66-1988 Specific Transformer
6. CAN/CSA-C22.2 NO.223-M9 ultra-low voltage output
7. CAN/CSA-C22.2 NO.60950-00 Secure Information Technology Equipment

Inspection specification for four layer insulation wire： 1. Scope of application This specification is applicable to the inspection of MIW-B and MIW-F four layer insulation wires. 2. Appearance inspection a. Whether there are scars or stains; b. Whether the smoothness, luster, and color of the surface are uniform; c. Whether there is adhesion; d. Is it a designated color (except for normal yellow)? If the customer orders a color, it should be marked and distinguished on the outer box; e. Is the spool intact and undamaged. Finished outer diameter: The measurement of the outer diameter of the finished product requires the use of a measuring device with an accuracy of 1/1000mm, such as a laser outer diameter tester The measurement of the outer diameter of the sample is carried out using the following method: Take a sample with a length of about 15cm and place it on a plane perpendicular to the sample Measure the diameter of three points at almost equal angles and represent the outer diameter of the finished product with the average of these measurements Outer diameter of conductor: The measurement of conductor outer diameter requires the use of a measuring instrument with an accuracy of 1/1000mm, such as a laser outer diameter tester, to Remove the insulation layer appropriately without damaging the conductor, and measure the conductor diameter using the same method as measuring the outer diameter of the finished product Calculate the average value as the outer diameter of the conductor