... the following workshops: 1. Workshop 1: diamond electroplated products: diamond burrs, diamond files, diamond stone sharpeners, ... stone brushesstone cutting machines, pneumatic water sandersmetal suction cups, plastic suction cups, grout bagsgrout hole saw kits, carbide ... trowels, measuring tapesspirit levels, traffic cones, safety protection products, etc. Company instruction:We have been engaged in ...