Shenzhen Qianhai PCF Technologies Co., Ltd.       Shenzhen Qianhai PCF Technologies Co., Ltd. (abbreviated as PCF) is a high-tech enterprise registered in Guangdong Qianhai Free Trade Zone and facing the global LED mid-to-high-end industry.      The company specializes in the research and development, production and sales of LED light pole screens, LED smart traffic display fields, LED commercial display fields, LED displays, LED light-emitting diodes, LED lightin...