Nihon Seiko Co., Ltd. (TYO:5729)
Japan flag Japan · Delayed Price · Currency is JPY
11,670
-480 (-3.95%)
Aug 22, 2025, 3:30 PM JST

Nihon Seiko Company Description

Nihon Seiko Co., Ltd. manufactures and sells antimony products and metal powders in Japan.

It offers antimony trioxide, which is used as a flame-retardant additive for various plastics and rubbers, polyester polymerization catalysts, and solid lubricant in brake pads.

The company also provides antimony metal for use in raw materials for semiconductors, film for optical memory disks, thermo-electron converters, storage batteries, bearing metals, hard lead castings, cable sheathing, typemetals, and sheet and pipe alloys; antimony metal powder for glass fining agents and alloys; antimony metal shots for alloys; and copper and antimony metal powder for electric detonators.

In addition, it offers special treatment antimony trioxide; sodium antimonate for use in engineering plastics, and decolorization and fining of glasses; antimony trisulfide for use in friction materials, match box flints, fireworks, glass fining agents, powder for toys, and flash mixtures; and antimony pentasulfide for surface treatment of decorative trims and building materials.

Further, the company provides antimony trichloride and antimony pentachloride for use as catalysts in fluorination, chlorination, and bromination of organic compounds, pigments, and semiconductor materials; and STEM series products that are mixtures of flame retardants for use in polyolefin plastics, such as PP and PE.

Additionally, it manufactures and sells atomized metal powders of copper, tin, bronze, brass, silver, platinum, gold, stainless steel, nickel, nickel alloy, etc. The company was formerly known as Nakase Kogyo Co., Ltd. and changed its name to Nihon Seiko Co., Ltd. in 1936.

Nihon Seiko Co., Ltd. was incorporated in 1935 and is headquartered in Tokyo, Japan.

Nihon Seiko Co., Ltd.
CountryJapan
Founded1935
IndustryChemicals
SectorMaterials
Employees261
CEONoritaka Ueda

Contact Details

Address:
3-2 Shimomiyabi-cho
Tokyo, 162-0822
Japan
Phone81 3 3235 0021
Websitenihonseiko.co.jp

Stock Details

Ticker Symbol5729
ExchangeTokyo Stock Exchange
Stock TypeCommon Stock
Fiscal YearApril - March
Reporting CurrencyJPY
ISIN NumberJP3721000002
SIC Code3330

Key Executives

NamePosition
Noritaka UedaChief Executive Officer