tender for electrical contact cleaner spray type in 550 ml can for to retards the process of carbon generationincreasing, avoid arcing & prevents burn up due to overheating & clean electrical contacts of contactors, motors,fuses, relay etc., required makes: auto krom, elecstar, super kleen, glitz and asv note: firm should quote alongwith authorization certificate in railway format along with oem test, guarantee certificate to accompany the supply .