Weifang City Dual-source Hardware Products Co.,Ltd is a professional manufacturer for glass clamps, railing accessories and spider series, balustrades and railing system with Nine years experience in Gaomi city Shandong, China. All the steel castings are found by our own stainless steel investment casting foundry and machining factory. We focus on the detail of each process that from design, manufacturing, assembly to project, we have professional R&D team that could provide technical product designed and solution, manufacture and delivery with one-stop. Also we can do OEM and ODM in accordance with any requirements by customers. And for conventional product development you don't need to assume the mold fee. We make every step strictly, especially for testing. We have spectroscopy analysis, metallographic microscope, tensile, hardness, impact and X-Ray test, liquid penetrant, magnetic particle test and NTD inspection. The interpretation of the data from these test facilities could promise the best quality of our raw casting, any required test report of process should be attached before delivery of all the casting parts of each batch. Our products should be passed salt spray test and we adopted special passivation technology so that our products shining with silver white luster, and earned customers' fondness. Our products are exported to overseas markets such as Australia, Brazil, Canada, Germany, Italy, India, Japan, UK, USA etc. We are always sincerely to cooperate with clients from all over the world to develop together and create a brilliant tomorrow.