Shenzhen OPT Cutting Tools Co., LTD. E-mail ng Kumpanya opttools@tongweicn.com opt@tongweicn.com kumpanyaWhatsapp +86 13928413454 +86 13652315199 Address ng Kumpanya Rm609, Building A, Dulex Hi-tech Park, Guangyi Road, Longhua District, Shenzhen, China Telepono ng Kumpanya +86 13652315199 +0086 755-27579101