I am mechanical engineer, owner of third party inspection agency, product sourcing agency, based at kolkata, well experienced in casting products, valves, man hole cover, frame, ceiling fan body, apparel etc. Also I am trader and merchant exporter of different engineering items and clothes etc. If you want I can assist you to search good reliable manufacturer from Howrah, many valve manufacturers are there, regularly I am visiting them for my work. Or if you allow me then I can trade and sale to you also.