Polycrystalline Diamond (PCD) Drawing Die Since the 1970s, scientists and engineers all over the world have been researching and utilizing a highly advanced material called polycrystalline diamond (PCD). PCD is produced through a process of sintering that
OBB Pure Cotton sanitary napkin is the most cost-effective product of our company,Main raw material:Non woven fabric, polymer sap, pure wood pulp, dust-free paper, PE film, release paper.This series of products has the following advantages:Pure cotton sur