01 Flat iav Ob Sab Ncaj Kab Edging Tshuab nrog Sib Tsoo thiab Polishi ...
Cov khoom tsim nyog rau kev sib tsoo iav tiaj tus nrog ob sab ncaj. Rough sib tsoo, zoo sib tsoo, polishing kev nyab xeeb lub kaum sab xis (ntsia kev nyab xeeb chamferin ...
saib kom meej