Customers
Our tubes, insulators and crucibles work inside crystal-growth furnaces, thermocouples and industrial furnaces. Most of our customers have ordered from us for years.
We supplied thermocouple protection tubes for the expansion of China’s solar industry.
Pieces shipped 2024–2026: from our sales records.
Industries
01 / 05
Who: Several substrate makers. This is our largest product line.
Long flat twin-bore insulators hold the thermocouples inside vertical-gradient-freeze furnaces, where gallium arsenide, indium phosphide and germanium single crystals are grown. The wafers cut from them end up in data-centre lasers, 5G chips and satellite solar cells.
02 / 05
Who: 10+ thermocouple and instrument makers
Protection tubes and multi-bore insulators for thermocouple and instrument makers, including platinum-rhodium thermocouples that measure up to about 1,600 °C. Most reorder every few weeks.
What we supply
Closed-end protection tubes, 1- to 4-bore insulators and insulator beads
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03 / 05
Who: Optical-glass and specialty-alloy producers
Our corundum tubes and insulators work in the melting, annealing and heat-treatment furnaces of optical-glass and specialty-alloy producers, where the ceramic has to stay stable and clean at high temperature.
04 / 05
Who: Furnace builders, and steel and metallurgy plants
Work tubes, drilled and threaded tubes and custom parts for furnace builders and metal plants. We have shipped tubes 160 mm in diameter, and single tubes 5,595 mm long.
05 / 05
Who: Materials research institutes and laboratories
Crucibles, boats, tubes and insulators for materials research, including institutes that make platinum thermocouple wire and special alloys.
Already in use abroad
Our tubes and insulators are already in use in Europe and South Korea through export partners.
We describe our customers rather than name them, to keep their business with us confidential. Industry images are AI-generated illustrations, not the customers’ own plants or products. The furnace-tube photo is our own.
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Tell us the dimensions, grade and quantity. We confirm the grade, dimensions and tolerances in each quotation. Our yearly lab reports are available on request.