Profile: Borderline Stamp, Inc. specializes in supplying concrete curbing machines. We offer sod cutter, trailer accessories, mixers and curbing tools & equipment for lawn landscapes & gardens. Our efflorid is a multi-functional dispersible powder admixture for concrete and concrete products. It is used for improving the pump ability and finish ability, while reducing a possible tendency to bleed water to the surface after placement. We also provide backer rod, brick hand stamp, tuff curb and fibermesh.