Barter is the present and the future of international trade, especially for people who is starting in the import export business. Barter and more: Triangular operations.
The test tube brush and its function is so important, so you need to find anti-rust test tube brush. Our stainless-steel wire test tube brush, we generally choose stainless steel wire, because there may be solutions other than clean water inside the test tube, If the covered wire is used, the adhesive layer is easily corroded, so that the internal iron wire is rusted. However, the stainless-steel wire is relatively stable and not so easily corroded or rusted. But the cost of stainless steel will also be higher than the cost of rubber coated wire.