Trenching Cutter, Diaphragm Wall Cutter Our products are equal to Betek's products, such as BFZ152, BFZ169, BFZ80, BFZ65, BFZ25R, BHR73, BHR133, BHR142, etc. And also can produce according to your samples and drawings. They are used in building foundations, bridge and road constructions, trenching works,etc.