Opal Stone Limited
Tel: (852) 26901226
Fax: (852) 27701592
Address: Unit 1, 2/F., LT Tower, 31 Chong Yip Street, Kwun Tong, Kowloon
澳豐石業有限公司
電話: (852) 26901226
傳真: (852) 27701592
地址：九龍觀塘創業街31號LTTOWER2字樓1室
