... in transportation) Jiang Yin Jiu Feng Diamond Tools CO. LTD was founded back to 2009, mainly devoting to ... head, diamond wheel head, and diamond rasp, diamond grinding head, reamer, diamond colathar, whetstone, diamond pen, ... other brittle hard non-metal products.Diamond grinding bit, angle grinding bit: for grinding of stone, glass, bowlder, kentanium ... with constant efforts for perfection Diamond Tool