Quimser, S.A.

Keller Lufttechnik is a high-technology company with world-wide interests specialized in capturing and collecting air pollutants and reducing emissions at industrial applications.

Qingdao Jinjiuzhou Rubber Machinery Co., Ltd. is a company specializing in the production of rubber machinery such as vulcanizers and flat vulcanizers. The company is located in Mount Huangshan Industrial Park, Jiaonan City, Qingdao, close to Jiaozho

ALV-GmbH, established in 1981 and located in Langen / Germany, offers a wide range of sophisticated products for various specific experiments in the field of light scattering and correlation experiments for scientific and industrial applications.