1. Zomwe zimapangidwira lamba wa mchenga: Malamba opangira mchenga nthawi zambiri amakhala ndi zinthu zitatu zofunika: Base material, Binder ndi abrasives.Zoyambira: Zovala, Paper Base, Composite base.Binder: Guluu wa nyama, Semi-resin, utomoni wonse, pr yosagwira madzi ...
Werengani zambiri