
Shanghai Jingzhan Precision Machinery Co., Ltd. Shanghai Jingzhan Precision Machinery Co., Ltd. is mainly engaged in the R&D, production and sales of oral instrument processing equipment. Our company launched the R&D of root canal file production equipment in 2008, and successfully designed and manufactured the first root canal file production machine in 2009. Adhering to a rigorous and responsible attitude, the company did not rush to launch the equipment into the market, but adopted the strategy ...