Founded in 1976 as a manufacturer specialized in Volute Springs, S Springs, Springs, CNC Parts and Stamping Parts. To ensure our quality, we purchase the material directly from Taiwan China Steel Company; manufacture of parts has been fully automated.
After almost 40 years of experience, we have acquired more technology and better quality, as being the main supplier of Taiwan Automobile Factories. Our products are exported to Thailand, Malaysia, Indonesia, China, United States and other countries. For service convenience for our overseas customers (especially Japanese Automobile Factories in Thailand), in 2004 we set up a factory in Thailand.
Tong Na starting with Volute Spring & Spring Department, to improve our capability and meet our customers’ need, we establish 5 professional departments:
(1) Volute Spring Department
(2) Spring Department
(3) Tooling Department
(4) Stamping Department
(5) CNC Department
Automatic Volute Spring Machine
Automatic Heat Treatment Machine
S Spring Machine
CNC Lathe Machine
CNC Lathe Machine
Volute Spring, S Spring, Torsion Spring, Extension Spring, Compression Spring, Shaft, Tube, Plate Latch, Clip, Piano Wire……manufacturing and processing.
Spring Tension Testing Equipment
Spring Durability Testing Equipment
Hardness Testing Equipment
Spring Torque Testing Equipment
At Tong Na, quality is paramount. With dedicated quality engineers and controllers at each factory, we strive to continuously improve both product and process quality. Tong Na has been a pioneer in installing the most up-to-date inspection and testing equipment. We have 2.5D Measurement Equipment, Projector, Hardness Testing, and Spring Torque Testing and Spring Tension Testing Equipment…etc. Our employees also continuously attend Quality Education Classes, in order to increase our quality knowledge. To comply with the environmental protection, we promise not to use material with harmful chemical substance. To ensure product safety, our products pass SGS testing standard. Tong Na has been ISO9001 Certified. Right now, we are preparing for the TS16949 certification.
From designing, manufacturing, quality control, until finished product delivery, with our commitment and dedication of investment, we are confident that this is your best choice in the Precision Industry.