Website: https://4j.com.hk
Email: shop4j@yahoo.com
Tel: (852) 2947 3321
Fax: (852) 2947 3348
WhatsApp: (852) 90414097
Address: Rm 204, Poly Centre, 15 Yip Fung St., On Lok Tsuen, Fanling. N.T. , Honh Kong
FB 3j&4j Page: https://www.facebook.com/3j.com.hk