These products are all components for the Electronic expansion valves,

the material are made by stainless steel 304,using progressive die for

producing,Stamping presses where the part is carried on the steel webbing

as the part progresses through the forming process.Tieniu's  deep drawn metal

stamping presses are capable of drawing a variety of metal types with draw lengths

of up to 8" (200mm), part diameters as small as .25" (6.35mm), and material

thicknesses from 0.001" (0.025mm) to 0.150" (3.8mm).