Changsha Friend Experimental Analysis Instrument Co., Ltd is a high-tech enterprise for researching, designing, developing and producing oil treatment equipment. With its continuous drawing of lessonas, unremitting innovation borrowing advanced technology from both at home abroad, our ...

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 ...

Shanghai Luheng Instrument Co.,Ltd. is one of the leading company specializing in designing, producing and selling petroleum instruments, civil engineering instruments,drilling liquid other lab instruments. Our Advantages You can get our in-time reply via email or fax phone. You ...