上海东耐电子工具有限公司

Tenacity Electool Co,.Ltd (MASSA TOOLS) is a professional manufacturer of Screwdriver Bits, hex key wrench, and Accessories for power /pneumatic tools for more than 20 years in China. The products have been selling worldwide and have earned a stellar reputation in the screwdriver and bit fields.

上海东耐电子工具有限公司（MASSA工具）是一家专业生产螺丝批头，六角扳手的公司，在中国有20多年制作电动工具气动工具配件的经验。该产品并在一些螺丝刀领域已畅销世界各地，并赢得了一流的口碑。