Summa Tangential Knife Blade SUMMA 390-534, 390-550, 390-549, 390-551, 390-560, 391-163 Shenzhen Oyea Machinery Co., Ltd. Add: No. 2008 , Shennan Road , Futian District , Shenzhen 518026 , China Tel: +86-0769-88014625 Phone Number: +86- 18823852826 Email: info@china-oyea.com 1659590865@qq.com Facebook： www.facebook.com/ShenzhenOyea/ Youtube: www.youtube.com/channel/UCG01XsHeFvToKBaAZxEqEcA Web: www.china-oyea.com QQ: 1659590865 LINE: 18823852826 WeChat： 18823852826 WhatsApp: +8618823852826