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  3. M.WATANABE & CO.,LTD.
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M.WATANABE & CO.,LTD.

EstablishmentJuly 1952
capital8000Ten thousand
number of employees59
addressTokyo/Chuo-ku/2-16, 4-chome, Nihonbashi-Muromachi,
phone03-3241-5231
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last updated:May 27, 2026
M.WATANABE & CO.,LTD.logo
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  • Company information
  • Products/Services(71)
  • catalog(37)
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M.WATANABE & CO.,LTD. Company Overview

"Everything is for the satisfaction of our customers." We accurately respond to the diversifying and complicating needs.

Founded in 1930 as a specialized trading company for imports and exports, we celebrated our 90th anniversary in 2020 and are fully committed to the further development of the M.WATANABE Group. Since the mid-1960s, we have started manufacturing and selling our own products such as quartz processed products, silicone rubber molded products, and cleaning equipment, under the policy of selling silicon (Si) related products to the semiconductor industry. As a manufacturing trading company, we have grown alongside the IT society by providing high-quality products and services. Moving forward, we aim to create a company where employees of the group companies, centered around M.WATANABE & CO.,LTD., work vibrantly every day, and the entire workplace becomes a learning organization. We are determined to continue striving in all our business endeavors with a strong will to respond to the true needs of society. We sincerely ask for your continued support and patronage.

Business Activities

【Related Manufacturing Departments】 ● WACOM MANUFACTURING CO., LTD. Quartz glass products (ASM Epsilon quartz components, various processed products), silicone rubber products, components for semiconductor equipment, carriers for wrapping and polishing. ● TOMCO MFG.,LTD. Wafer transfer machines, IPA vapor drying equipment, parts regeneration cleaning, parts processing. ● AMAYA CO.,LTD Atmospheric CVD equipment, MO-CVD equipment, photomask cleaning equipment. 【Environmental Related】 Solar-grade Si wafers, separator & cleaning systems, wire soak coolant recovery systems, cerium oxide recovery systems, slurry recycling systems, IPA recycling systems, water quality analyzers, inorganic coagulant oil floc. 【Materials and Components Related】 Covalent Materials Co., Ltd. products (quartz glass, SiC, carbon), fine ceramics, machinable ceramics, various filters, other consumable parts for semiconductor equipment, silicone resins, refractory materials, various heater-related products.

Recommended information

Silicone rubber sheet with glass epoxy substrate

Silicone rubber sheet with glass epoxy substrate

In addition to glass epoxy substrates, it is also possible to integrally mold Bakelite substrates, PET films, double-sided tape, resin, and metal.

M.Watanabe's silicone rubber sheets can be integrally molded onto various substrates depending on the application. 【Features】 ■ Silicone rubber can be integrally molded onto substrates such as glass epoxy materials. It is mainly used as a plating mask for lead frames and connector manufacturing. ■ Laser processing is also available. ■ Substrates other than glass epoxy boards can also be accommodated. - Bakelite boards - PET films - Double-sided tape - Resins - Metals and others can also be accommodated. *For more details, please contact us or download and view the catalog.

Products/Services (71)

O-ring "Katon" product image
O-ring "Katon"
Silicone rubber sheet for electronic devices product image
Silicone rubber sheet for electronic devices
Silicone rubber sheet with glass epoxy substrate for communication equipment product image
Silicone rubber sheet with glass epoxy substrate for communication equipment
Aerospace-grade heat-resistant silicone rubber sheet product image
Aerospace-grade heat-resistant silicone rubber sheet

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catalog(37)

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Introduction of (Maxmold) Katon FFKM O-ring Products_20260508 <Watanabe Trading Company>

Introduction of (Maxmold) Katon FFKM O-ring Products_20260508 <Watanabe Trading Company>

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Katon Japanese Semiconductor Catalog 2026 Q1 <Watanabe Trading Company>

Katon Japanese Semiconductor Catalog 2026 Q1 <Watanabe Trading Company>

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Katon MATERIAL SELECTION GUIDE

Katon MATERIAL SELECTION GUIDE

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Appearance Inspection AI 'NuLMiL'

Appearance Inspection AI 'NuLMiL'

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Detailed information

Company name M.WATANABE & CO.,LTD.
number of employees59
Contact addresspostalcode 103-0022 Tokyo/ Chuo-ku/ 2-16, 4-chome, Nihonbashi-Muromachi, View on map TEL:03-3241-5231 FAX:03-3241-5208
Business LocationsClick here for the list
Industry Electronic Components and Semiconductors
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