Company Commercial credit company CRYSTAL Ltd. The Trading Company of manufacturer of a copper powder ultradispersed mark PMU. The basic direction, the Selling of a powder of copper ultradispersed mark PMU 99. 99% -99. 998% . The size of particles from 0. 3 up to 7 microns. The form of particles spherical. EXW-Ekaterinburg. Sertifikat-SGS.