SHANGHAI, Jan. 21 (SMM) – SHFE three-month zinc contract prices inched down after opening higher. Discounts of #0 zinc against SHFE three-month zinc contract prices expanded to RMB 250-270/mt, with traded prices RMB 15,110-15,130/mt. #1 zinc prices were around RMB 15,080/mt. Good supply tightness alleviated. Traders lacked buying interest, while downstream buyers remained cautious, keeping transactions quiet.