TGK GmbH

What TGK GmbH does

TGK GmbH is a privately held German specialty wholesaler (Gesellschaft mit beschränkter Haftung) founded in 1982 and headquartered in Schloß Holte-Stukenbrock, Germany. The company operates a 4,000 square meter warehouse stocked with over 10,000 SKUs spanning coloured and flat glass, architectural glass, specialty glass, cutting and grinding hand tools, soldering equipment, industrial machines (saws, grinders, kilns, sandblast cabins), and technique/training resources, sourced from manufacturers including Bullseye, Oceanside, Wissmach, Schott, and Lamberts. TGK self-describes as the world's largest wholesaler for artglass and supplies, and runs both B2B and B2C channels through its own multilingual e-commerce storefront plus in-person seminars and workshops.

The core technology layer is a conventional e-commerce distribution platform with shopping cart, customer accounts, newsletter marketing, and shipping integrations to DPD, DHL, and freight forwarders for global fulfillment; no proprietary software, AI/ML, or platform-as-a-service revenue streams are indicated. Revenue is generated transactionally through unit-priced product sales (one-time purchase model), supplemented by educational seminar/workshop fees, with no subscription tier, enterprise contract model, or disclosed pricing structure. The stated customer base is a horizontal mix of hobbyists, professional glass artists, and SMB craft businesses working across techniques such as Tiffany, fusing, mosaic, leaded glass, lampwork, painting, and sandblasting. The company is independently owned with no disclosed parent, venture funding, or institutional investors, and operates with a lean headcount of 23 employees.

Name

TGK GmbH

Legal name

TGK GmbH

Website

https://tgk.de

Company type

Private

Founded year

1982

Operating status

Operating

Headcount range

11–50 employees

Short description

TGK GmbH is a German specialty wholesaler and e-commerce retailer founded in 1982, distributing over 10,000 art-glass products, tools, and machines to hobbyists, professional glass artists, and craft businesses worldwide from a 4,000 sqm warehouse.

Ownership category

akta.pro rank

NAICS

Jewelry, Watch, Precious Stone, and Precious Metal Merchant Wholesalers (423940)

SIC

Wholesale-Hardware (5072)

akta.pro primary industry

Crafting Tools & Equipment Retail (Cutting, Adhesives, Heat Tools) (CRALACAC)

Keywords

• Art glass supplies
• Stained glass materials
• Glass cutting machines
• Glass art tools
• Craft glass wholesale

Headquarters

HQ city

Schloss Holte-Stukenbrock

HQ country

Germany

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B and B2C

Offering type

Services

Cost components

Supply Chain, Operations, Personnel, Infrastructure, Marketing or Sales

Revenue model

1. E-commerce Product Sales: Online sales of art glass, tools, machines, and craft supplies to hobbyists, artists, and professionals. Products include coloured glass, flat glass, architectural glass, special glass, cutting tools, grinding machines, soldering equipment, kilns, and related accessories.

Pricing tiers

Go-to-market motion1 record

Distribution channels1 record

Marketing channels4 records

Core offering

TGK GmbH is a wholesale distributor selling art glass (coloured, flat, architectural, and special glass in COE 83/90/96/104), hand tools, industrial machines, and craft supplies to glass artists and craftsmen. The company operates an e-commerce storefront carrying more than 10,000 SKUs from brands such as Bullseye, Oceanside, Wissmach, Schott, Lamberts, Weller, and HAKKO, and ships globally from a 4,000 sqm warehouse in Germany. It also publishes educational resources and runs workshops on glass art techniques including fusing, Tiffany, leaded glass, mosaic, and sandblasting.

Product overview

TGK GmbH is a wholesale distributor of art glass and glass-working supplies, operating as the self-described world's largest wholesaler in this space. The company offers over 10,000 products across four main categories: Glass Products (various types including coloured, flat, architectural, and special glass with different COE ratings from multiple manufacturers), Hand Tools (cutting, grinding, drilling, sawing, soldering, and foiling equipment), Machines (industrial equipment including grinders, saws, sandblast cabins, and kilns), and Techniques/Training (educational resources and workshops). The company serves glass artists, craftspeople, and professionals with a 4,000 square meter warehouse in Germany and has been in operation since 1982.

Differentiator

Problem solved

Functional benefit

Segments1 record

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Partnerships

Nine partnerships are on record, tiered core and minor.

• Bullseye GlasscoreChannel Partner/ Reseller/ DistributorBrand represented in TGK's product catalog. TGK distributes Bullseye Glass products including colored glass, sections, and specialty items.
• Oceanside GlasscoreChannel Partner/ Reseller/ DistributorBrand represented in TGK's product catalog. TGK distributes Oceanside Glass products including colored glass tiles, rods, and nuggets.
• Wissmach GlasscoreChannel Partner/ Reseller/ DistributorBrand represented in TGK's product catalog. TGK distributes Wissmach Glass products.
• Schott GlasscoreChannel Partner/ Reseller/ DistributorBrand represented in TGK's product catalog. TGK distributes Schott Glass products including specialty glasses, restoration glasses, and rods.
• Lamberts GlascoreChannel Partner/ Reseller/ DistributorBrand represented in TGK's product catalog. TGK distributes Lamberts Glas products including restoration glass.
• WellercoreChannel Partner/ Reseller/ DistributorTool brand represented in TGK's product catalog. TGK distributes Weller soldering irons and accessories for glass work.
• HAKKOcoreChannel Partner/ Reseller/ DistributorTool brand represented in TGK's product catalog. TGK distributes HAKKO soldering stations and irons.
• DPDminorChannel Partner/ Reseller/ DistributorShipping logistics partner for parcel delivery services.
• DHL PremiumminorChannel Partner/ Reseller/ DistributorShipping logistics partner for premium delivery services.

Scale indicators4 records

Recent moves1 record

Expansion highlights4 records

Others

• Bullseye Glass: Bullseye Glass is a leading US-based manufacturer of colored art glass for fusing and stained glass, currently distributed by TGK in Europe. Related to TGK as a key supplier/manufacturer partner; both serve the same end customer base of art glass creators.
• Oceanside Glass & Tile: Oceanside Glass & Tile is a US-based manufacturer of art glass, fused glass sheets, and mosaic tiles, distributed by TGK. Related as a key supplier within TGK's catalog, serving the same end customer base of glass artists.

Broad incumbents

• Dick Blick Art Materials: Dick Blick is the largest US art supplies retailer, offering a broad catalog including glass art supplies. Comparable to TGK as a multi-channel art supplies distributor, though Blick serves a much broader art supplies market rather than specializing in art glass.
• Michaels Stores: Michaels is North America's largest specialty arts and crafts retailer, carrying glass art supplies among a much broader craft inventory. Comparable to TGK as a craft supplies channel serving hobbyists, though operating at vastly larger scale and with a much wider product scope.

Emerging players

• Glastar Corporation: Glastar manufactures glassworking equipment including grinders, saws, and lapidary machines, and distributes through specialty art glass channels. Comparable to TGK as a supplier of glassworking tools/machines within the same customer base of glass artists and craftsmen.
• Inland Craft Products: Inland Craft Products is a US-based manufacturer and distributor of glass cutting tools, grinders, and lapidary equipment. Comparable to TGK as a glass-tools specialist serving the art glass hobbyist market, though Inland focuses on manufacturing rather than multi-brand distribution.

Regional players

• Hobbycraft: Hobbycraft is the UK's largest arts and crafts retailer with a multi-channel operation serving hobbyists. Comparable to TGK as a regional craft supplies retailer/distributor, though Hobbycraft is geographically focused on the UK rather than continental Europe.

Direct peers

• Delphi Glass: Delphi Glass is a major US-based art glass retailer and wholesaler, offering colored glass, tools, and supplies to stained glass and fused glass artists. Directly comparable to TGK as a multi-brand art glass distributor with e-commerce, catalogs, and educational content serving hobbyists and professionals.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat3 records

Key risks6 records

Key highlights7 records

Customer concentration

• YouTubeyoutube.com/user/TiffanyGlasKunst/videos
• Facebookfacebook.com/tgkgmbh
• Instagraminstagram.com/tgk.gmbh
• LinkedInlinkedin.com/company/tgk-gmbh

Revenue estimate

Valuation estimate

Number of profiles

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about TGK GmbH