PRAQ S.A

Hiden Analytical manufactures quadrupole mass spectrometers Our quadrupole mass spectrometers are available in a broad range of configurations for gas / vapour analysis, residual gas analysis, plasma ion analysis, UHV surface science , therm...

Shanghai Mailun Daily Chemical Co., Ltd. is located in Zhujing Industrial Park, Jinshan District, Shanghai. Its predecessor was Wenzhou Zhengyuan Daily Chemical Co., Ltd., which was established in 1990 and relocated to Shanghai in 2002. It covers an