Profile: Lens Technology (HK) Development Limited is a manufacturer of weld cleaning machines and cleaning brushes. Our weld cleaning brushes are made of conductive carbon fiber, brass and stainless steel. The brush is small and light, easy to use and powerful. Using with our weld cleaning machine, the brush can quickly and effectively clean the welding marks on the surface of metal (stainless steel, brass, bronze), as well as cleaning, the unit can electro-polish, mark, or brush electro-etch the same metals.