All-around metal detector impurities All-metal impurities in detector National patent! Speed identification! Clear evidence of mixed oxide and slag Saving. Save money. More professional! “鎂”麗世界 “碳”為觀止! 鎂合金.碳交易.創新事業 http://www.kuangyue.com/ 服務skype:sherman7007 電話:27769799 台北市仁愛路四段29號12樓B 中國山東臨沂費縣費朱路中段 江蘇常熟東南開發區銀河路金河園10號 051252358380