Since 2011,our factory designed and started production of sight flow indicators after 15 years production experience on valve and flange.From 2014,our factory started foreign trading business for SFI and our foreign and domestic customers have come to recognise LSMSFI stand for quality,reliability and readily available products right now.Meanwhile ,their continuous purchase and feedback are significant to help us improve our goods and service level when facing different customers no matter sample or bulk orders.Now our factory extends our field into flow meter and filter,researching and developing flow transmitter based on our sight flow indicators.