VIDIAG

Shanghai Donghua Environmental Engineering Co., Ltd. is a chemical engineering company specializing in the research, process development, complete equipment, installation and commissioning of volatile organic compound waste gas and wastewater treatme

Since the foundation in 1980, we have been manufacturing flat gaskets for all branches of industry, for technical trade and for exporting from the materials. As a reliable seal manufacturer, we ensure you with our qualified employees and the machine

WELLAND & TUXHORN AG is one of Germany’s leading valve manufacturers. It is a typical German medium-sized enterprise and has a long and successful history going back to its foundation in 1901. Since the 1930s, it has specialised in manufacturing auto