In 1985 ::

The company introduced a time delated self closing cartridge system which is used in most faucet in the public buildings.

In 1991 ::

The company built its first copper tube mill in Laem Chabang Cholburi in order to produce straight length engineering tube and copper plumbing tube.

In 1994 ::

P.S. Metal Works, Asaka Shinkan Kogyo K.K. and Nissho Iwai Corp. formed a joint venture company "Asaka Bright Tube Co., Ltd." to co-operate, transfer know how and do the marketing activities for brass tube.

In the following year ::

The company expanded the tube production capacity by 7,000 M/T

Now ::

The company producing copper zinc brass alloy and also perform cut to length services for customers.