Watahan Trading Co., Ltd.

Contributing to healthy, beautiful, and enjoyable lifestyles.


We are a trading company dealing in pharmaceutical and chemical products.

Since our founding in 1965, we have focused on natural raw materials and the provision of natural ingredients derived from plants and animals. We are capable of providing a stable and reliable supply of goods, and have distributorship in Japan in regard to a number of the products we handle.

In the manufacturing of fertility treatment medications, we import the raw materials for HMG, a gonadotropin hormonal agent, from China and sell them to pharmaceutical companies, after

refining at our pharmaceutical laboratory in Yokohama, Kanagawa Prefecture.

Company Profile

Name Watahan Trading Co., Ltd.
Head Office Watahan Nohara Bldg., 1-4 Yotsuya, Shinjuku-ku, Tokyo 
(Tel : +81-(0)3-3353-2304)
Jul. 7, 1965
Business Import and sales of pharmaceutical and cosmetic materials, industrial-use wax, general and health food materials
Capital 45,472,000 yen(100% capitalized by Watahan & Co., Ltd. )
Account Settlement March 31 annually
Employees 42 (including parttime workers) as of March 31, 2020
Board Members
Senior Chairman
Isamu Nohara
Vice Chairman
Tetsuro Nagata
Hiroshi Ariga
Vice President
Hiroyuki Onishi
Audit & Supervisory Board Member
Takashi Yokoyama
Main Banks Mitsubishi UFJ Bank, Hachijuni Bank and Mizuho Bank
Principal Places of
Pharmaceutical laboratory in Yokohama
Approvals and
Pharmaceutical product manufacturing
Tokyo   13AY000035  13AZ200177
Kanagawa 14AZ005004

Pharmaceutical product wholesale distribution
Tokyo   #0304950112  #5307130358

Veterinary pharmaceutical product manufacturing
#45 manufacturing, 23 approvals by the Ministry

Veterinary pharmaceutical product wholesale distribution
#61 wholesale, 22 approvals by Tokyo
#2884 by the Ministry for import of toxic agents and harmful substances
General sales of toxic agents and harmful substances #341 for 27 new health and hygiene medicines by Shinjuku-ku Health Department
Web Site http://www.watahan-trading.co.jp/english/

(June 29, 2020)