"Guangdong Lianzhixin Metal Detection Equipment Co., Ltd. was established in 2006. It is a technology-based enterprise that has long been committed to the professional research and development, production and sales of metal detection instruments and equipment in the field of metal detection technology. It has its own brand: Lianxin brand (trademark registration No. 5999209) and multiple invention patents, with CE and other product certificates, and is the drafting unit of the national textile needle detector calibration specification JJF (Textile) 080-2018.