Company Name: TECHNO SPRING MFY., LTD. 　Address: Room 14, 17/F., Wah Sang Ind. Bldg., 14-18 Wong Chuk Yeung St., Fotan, 　　　　　　　　Shatin, N.T., Hong Kong 　Tel:　852-2697−3830　FAX：　852-2693−1385 　URL　www.yp.com.hk/techno/ 　Business:　Transportation between Japan and China. 　　　　　　　　Sales and purchase in Hong　Kong.　 　Histry: 　1987　　Set up factory to make heat-treatment on high carbon steel strips and 　　　　　　AISI-301EH stainless strips for spring use and started sales and production. 　　　　　　A few years later, we started production of power springs and constant 　　　　　　force springs. 　1994　　Removed factory to Dongguan, Guang Dong province, China to cope 　　　　　　with increasement of labour cost in Hong Kong. Hong Kong office keeps 　　　　　　function of head office together with transportation between Hong Kong 　　　　　　and China, sales and purchase in Hong Kong.

Company Name: Dongguan Da Lang Techno Plastic & Metal Co., Ltd. 　Address: 　63 Sui Chang Four Rd., Shuikou, Da Lang, Dongguan, Guangdong Province, 　　　　　　　　　China　　Tel: 769-8313-8979　 FAX: 769-8318-7369 　Establishment: 1994 　Emplyee: 100−150 　URL:　http://www.dgdalong com/cn/index.aｓｐ 　Histry:　 　1994　　Set up factory in Qinxi, Dongguan, Guangdong Province, China as processing 　　　　　　factory for Hong Kong head office. Factory name is Dongguan Qinxi Da Long 　　　　　　Plastic & Metal factory. 　　　　　　Production of power springs, Measuring rulers, OEM business for instruments 　　　　　　with power springs, Gas torch, Assembly of sirocco fan, etc.. 　1999　　Removed factory to Qing Tang factory area, Da Lang, Dongguan. 　2010　　Removed factory to Shuikou factory area, Da Lang Dongguan. 　2012　　Changed processing factory to independent company limited with the name 　　　　　　of Dongguan Da Lang Techno Plastic & Metal Co., Ltd.