 ቀለሞች ውስጥ ማመልከቻ befor ብረት substrates ማዘጋጀት እና ተዛማጅ ምርቶች-ሙከራ ለ ዘዴዎች ያልሆኑ ከብረታማ ጩኸት-ማጽዳት abrasives- (ጊባ / 17849-1999 T)
Ukulungiswa substrates zentsimbi befor isicelo ipeyinti kunye ezinxulumene iimveliso-Test iindlela lweeprogram ezingezoze-ebuntsimbi zokuhlaba ukucoca abrasives- (GB / T 17849-1999)