News
Revamping & Advanced Controls at SIGMA
At SIGMA, revamping means rethinking how we work, how we monitor, and how we serve our customers. Through connected machines, intelligent controls, and smart maintenance strategies, we’re making our production not just more efficient—but more agile, resilient, and ready for the future of refractory manufacturing.
Empowering production with Industry 4.0 & IoT
SIGMA is rising at the forefront of digital transformation in glass production—leveraging IoT and Industry 4.0 to enhance process visibility, operational reliability, and future-proof agility.
Firing the Future: Our Electric Furnace Revolution
At Sigma, we invest in clean energy, innovate boldly, and cut emissions—not corners. Can the same be said for every supplier in your portfolio?
Sigma Group Achieves Ecovadis Silver Medal
This year, we’re proud to announce a major step forward: we’ve been awarded the Ecovadis Silver Medal, placing us among the top 15% of companies evaluated globally for sustainability performance.
SIGMA’s latest investments in finishing equipment
SIGMA controls all the steps leading to the production of refractories and has recently invested again in finishing with two additional double-disc grinding machines, one in Plovdiv, the other one in Locate Varesino.
The company’s plants are now equipped with:
Nr. 5 double-disc laser centring grinding machines (3 in Plovdiv and 2 in Locate)
Nr. 5 five-axis numerical control workstations (3 in Locate and 2 in Plovdiv)
Nr. 6 cutting machines (4 in Plovdiv e 4 in Locate)
Additionally, we have 3 dedicated areas (2 in Locate and 1 in Plovdiv) for pre-assembly and inspection.
This state-of the-art equipment allows us to expedite grinding and pre-assembly operations both for forehearths & working ends and bottom paving both on an emergency basis or for any new orders.
Events
SIGMA generally attend the major exhibitions, conferences and events planned throughout the year to build relationships and network with the Glass Industry personnel from all over the world, keep in touch with developments in refractories as well as find new business opportunities.
ASEAN Federation of Glass Manufacturers Conference 2025
Cebu, Philippines | 22–25 September 2025
We will take part in the 47th AFGM Conference, engaging with leading glass producers in Southeast Asia. This event is a great opportunity to share our expertise and strengthen partnerships in one of the most dynamic regions for glass manufacturing.
86th Conference on Glass Problems – Booth #18
Toledo, Ohio, USA | 6–9 October 2025
We will join the largest glass manufacturing conference in North America, showcasing our advanced refractory solutions and innovations at Booth #18. A key opportunity to connect with industry leaders and discuss the future of glass production.
Glassman Italy 2026 (Visitor Attendance)
Bologna, Italy | 4–5 February 2026
We will attend Glassman Italy as visitors to strengthen relationships, exchange insights, and stay ahead of industry developments in one of Europe’s most important glassmaking hubs.
China Glass 2026
Shanghai, China | 7–10 April 2026
We will exhibit at one of the world’s largest glass industry events, presenting innovative refractory solutions designed to improve efficiency, sustainability, and performance in global glass production.
Glassman Latin America 2026 – Booth #A16
Mexico City, Mexico | 20–21 May 2026
We will be at Booth #A16 during Glassman Latin America to showcase our proven refractory technologies and discuss how we support glassmakers in driving performance and sustainability across the region.
Glasstec 2026
Düsseldorf, Germany | 20–23 October 2026
Our full sales team will be at Glasstec 2026, the world’s leading trade fair for the glass industry. This will be a unique opportunity to present our comprehensive range of refractory solutions, innovations, and sustainability initiatives to a truly global audience.