Changsha Friend Experimental Analysis Instrument Co., Ltd. is a leading brand of petroleum product analysis apparatus field at home. As professional manufacturer testing equipment, we are an active member in standards organizations and lead standard development to guarantee that the ...

TOP Oil Purifier(Italy)Group fessional leading manufacturer of oil purifiers and testers. We have tremendous strength in the fields research, development manufacturing with professional mass-production ability, perfect sales network, excellent after-sales service as well a image we ...