... electronic products, that are small and have higher density, such as single and double panel, FPC, membrane switch and other mobile phone products.O ... *3.7mm, 5.0mm*3.8mm , 4.0mm*3.0mm and other special size such as 4.0mm*2.0mm etc ... 100G to 600G. Thetrip force, rebound/return force, click, travel, and height, etc.... can be adjustable according to clients request. No ...