Lanjing Steel Structure Co., Ltd.factory covers an area of 73000 square meters. It is a professional enterprise specializing in the design, production, and installation of building steel structures, modular container houses, high-end composite panels, and more. The company boasts a team of specialized design and construction technicians, along with an excellent management team.It has passed ISO9001 international quality management system certification, as well as certifications from BV. SGS, and ...