Laizhou jin nuo hardness block manufacturing co., LTD is located in the bohai sea bank of beautiful coastal city - laizhou shandong province, a research and development, production, operating all kinds round, square standard professional factory house, enterprise by good faith as this, ...

Changsha Qlong Instruments Co. Ltd . is an excellent supplier specializing in trading and manufacturing Our main products is spectrophotometers , hardness tester muffle furnace some testing analyzer . (moisture balance calorimeter ) and so on With a wide range good quality reasonable ...