Check the main design dimensions as shown: R - 20

● Detection tool:digital caliper or micrometer.

● Indicate the code for inspection.

● The number of outlet slots is 4×2.

● hole A is not roundness≤0.20mm,both sides of the hobbing plane of the parallelism≤0.20mm,no significant warping.

● hole hole anastomosis is not allowed to have a step,feel smooth and unimpeded.

● no residual shape or damage,color is no different normal

● finish up to▽7 or more,but allow for harmless scars and miniatures.

● Metal-free impurities or other debris,containing metal,debris products,must be waste separation.

● no melting marks,no internal pores bright spot.There are stomatal highlights(excluding melting marks)products for foreign goods.

● no flash,burr and excess material.Key parts of the burr≤0.05 mm.

● anti-pressure≥25 kg/square centimeter,no damage.

● feel a strong elasticity,and not brittle.

● hardness,wear resistance are suitable for high-speed heavy-duty rotation.

● Selection of raw materials must meet the requirements of the EU ROHS directive,and has UL yellow card certification and fixed-point supply.

● heat distortion temperature≥120 degrees Celsius,insulation resistance must be≥1000M ohm,flame retardant UL94Vo level/0.8-3.2mm.

● other structures should meet the transformer manufacturing process as the standard.