Guiyang learn instrument Co., LTD. Is specialized in electrochemical analysis instruments, r&d, production and sales of enterprise, Products are widely used in power plant, chemical fertilizer...

2-1-1, No.21 Jingba Road, Zhengzhou, China

Henan Wheat Import And Export Co., Ltd. is an import and export company located in Zhengzhou, Henan Province, in the Middle of China. Our main business scope is testing and measuring instruments. Our ...

No. 30, Weiliu Road, Sa District,

Since 1990, Colead Industrial Co., Ltd. is one of leading professional manufacturer of various instruments and meters in China, exporting to worldwide market with higher quality and lower price. &...

No.4 Lutang Road, Jiangyan, Jiangsu Province, China

We zd instrument factory, is a specialized manufacturer of electro-chemistry instruments. Our main products are ph meters and waterproof pen ph tester; nutra-wand t. D. S meters, ec check, cf check, p...