... ,etc. bobbin shape round, not round, etc inner diameter13mm to 120mm(1",1.25",1.5",1.75",3",4",4.7”etc) bobbin Height1.4mm ... to 50mm resistance4-150ohm wire layer1,2, 3,4,6, ... near 1000 employees. Over these years, "Taichang" pay attention to science and technology, multi-directional to increase scientific and technological inputs, has introduced a ...