1:Air spring for electric fans(washing machine, etc) 2:Material: stainless steel ... 240mm 4:Sample could provide Air spring for electric fans(washing machine, etc) It is usually made of ... carbon steel.1,About ProductAs one of the electric fans' important parts,it requires the products to have ... .2*36*240mm Power3.9-4.1 KGUseageElectric fans 2,About our companyTO be the professional spring manufacturer ...