On Tai Waterworks Engineering Company Limited,安泰水務工程有限公司
On Tai Waterworks Engineering Company Limited
Tel: (852) 27910910|95251169
Address: 2/F, No. 105 Yuen Kong San Tsuen, Pat Heung, Yuen Long, N.T.
安泰水務工程有限公司
電話: (852) 27910910|95251169
地址：新界元朗元崗新村105號2/F