Sigma Company. It is an innovative technology enterprise focusing on the construction of high-end construction machinery, agricultural machinery and the ecological chain of mining equipment."A free soldering iron" is the vision of Sigma Company. Sigma has applied the digital economy platform development model to develop products, reworked the products of the machinery industry.Since its establishment, Sigma has been to build a full ecological chain brand complex integrating industrial design, product development, assembly production, after-sales service, overseas pilot projects, and digital platforms.
Sigma 
Sigma 