Longtech optics co., ltd is a professional manufacturer and exporter of small-medium size lcd, lcm in china. our company has passed the iso9001:2008 quality system certification. we produce tn, htn, stn, fstn lcd panel, character lcd module, graphic lcd module with cob, tab and cog technologies as well as serial lcm with rs232/iic spi interface. we have an efficient procurement and quality control processes, which ensures quick delivery of high-quality products and competitive price.