Manufacturing of chemical, technical, and industrial pottery ware and all other pottery products, including pyrometric cones, veritas rings, etc.

Facility	City	State	Employees	Status
Advanced Glass Industries, INC.	Rochester	NY	20–99	● ACTIVE
Allied Mineral Products LLC	Columbus	OH	100–499	● ACTIVE
Alluxa, INC.	Santa Rosa	CA	20–99	● ACTIVE
Bent Glass Design, INC.	Hatboro	PA	20–99	● ACTIVE
Bond Optics, LLC	Lebanon	NH	20–99	● ACTIVE
Ceramic Tech, INC.	Fremont	CA	20–99	● ACTIVE
Ceramtec North America LLC	Laurens	SC	—	● ACTIVE
Cps Technologies CORP.	Norton	MA	20–99	● ACTIVE
Crystex Composites LLC	Clifton	NJ	20–99	● ACTIVE
Du-co Ceramics Company	Saxonburg	PA	100–499	● ACTIVE
Fireclay Tile, INC	Aromas	CA	100–499	● ACTIVE
Gbc Advanced Materials LLC	Latrobe	PA	20–99	● ACTIVE
Morgan Advanced Ceramics, INC	Hudson	NH	20–99	● ACTIVE
Morgan Advanced Ceramics, INC.	Hayward	CA	100–499	● ACTIVE
National Magnetics Group, INC.	Bethlehem	PA	100–499	● ACTIVE
O'keeffe's, INC	Brisbane	CA	100–499	● ACTIVE
Patriot Armored Systems LLC	Lee	MA	—	● ACTIVE
Pfg Precision Optics INC	Ocean Springs	MS	20–99	● ACTIVE
Precision Glassblowing of Colorado, INC.	Centennial	CO	20–99	● ACTIVE
Quality Vision International INC.	Rochester	NY	100–499	● ACTIVE
Refractron Technologies CORP.	Newark	NY	20–99	● ACTIVE
Soundproof Windows INC	Reno	NV	—	● ACTIVE
Sunoptic Technologies LLC	Jacksonville	FL	—	● ACTIVE
Acme Vial and Glass CO.	Paso Robles	CA	—	● ACTIVE
Admail-express, INC	Hayward	CA	—	● ACTIVE

FactoryRegistry lists 1,348 facilities whose primary industry classification is one of the 2 industries above. This is a list by industry, not a list of makers: Census reports that establishments in these industries produced chemical, technical, and industrial pottery ware and all other pottery products, including pyrometric cones, veritas rings, etc., in the shares shown above, and does not say which establishments. Where a plant’s own website or a federal registry names what that plant makes, it appears on the plant’s own page with the source named.