Shizhong District

Founded in 2007Jinan Sumspring Experimental Instrument Co., Ltd. is an enterprise focus on laboratory analytical instrumentation development and sales of high-tech innovation , specializes in drug tes...

Tianxin district

Changsha Qlong Instruments Co. Ltd . is an excellent supplier specializing in trading and manufacturing . Our main products is spectrophotometers , hardness tester , muffle furnace , and some testing...