Ark Electric & Mechanical Co., Ltd. is a professional manufacturer specializing in the research, development and production of various precise metering pumps, flow sensors, industrial online monitoring control instruments systems. We are committed ...

We were founded in 2007, the 10 years we have focused on sewage treatment dosing part of product sales, customization system. We hope to promoted products made in china.

Xi\'an Binrain Environmental Protection Technology Co., Ltd. which is committed to environmental protection in western China. It a famous company with water treatment, the membrane treatment technology as its core. an integrated supply enterprise, ...