Espaseme

Sigma Chemicals has been trading internationally for over 30 years and specializes in supplying to the Mining Industry. We also offer an important procuring service for remote mine sites and laboratories. Sigma currently exports to over 35 countries.

Company Introduction: Hangzhou Aoke Environmental Testing Equipment Co., Ltd., abbreviated as Aoke Environmental Testing, is a high-tech enterprise specializing in the research and development, production, and sales of various environmental testing e