Responsibility is always been our principle. We would like to let our client always feel comfortable
when use TOHO valves.
1957 SHENG AN VALVE MACHINERY
Mr. Tsao Tang Lin invested a factory in order to supply valves in this era of lack of supplies.
1976 SHENG AN VALVE MACHINERY CO., LTD.
With the increase in customers and turnover, the factory must be in the name of company to deal
more business and created TOHO brand.
1997 SHENG AN HANG VALVE MACHINERY CO., LTD.
From now on, Mr. Tsao Tang Lin own this company totally, we could follow our wish to improve
quality and service absolutely.
2000 ( 1year after 921 earthquake)
Take this opportunity, we invested some new machines instead of old machines and stand up again
from 921 earthquake because those old machines and building were buried in the earth.
2006 Valve Lab. Established
Since 2004, Mr. S.S. Lin served as Chairman of particular importance to the stability of quality and
customer satisfaction. He invested Brass Valve in China to do better service for all clients who may
has only small order and who cares valve quality.
2006 establish a Valve Lab. to control and maintain valve chemical and physical property in order to
let our client always feel comfortable when use TOHO valves.
Application and passed ISO-9000 at the same year.
2009 Lead-free (No Lead) Valves
Environmental protection and health and comprehensive response to the United States to promote
lead-free lines and valves, we study and began production of lead-free valves, and passed WQA
audit at the same year.
2014 DNV Marine Valve certification
In order to be better in the field of Marine Valves, we invested in studying more copper alloy material,
and pass DNV certification is our aim.