WELCOME TO HUAFENGLAB
SinoFeng Educational Apparatus Int'l Limited
Email:marketing@huafenglab.com,
URL:www.huafenglab.com
Address:HONG KONG,CHINA
Specification:40mm, 50mm, 60mm, 70mm, 80mmAccording to Mohr. Made of brass, Nickel-plated.
Mobile:13802971364