久久久久国产精品aⅴ天堂,成人性生交A片免费直播APP ,男女扒开双腿猛进入爽爽免费,日本JAPANESE少妇高清

Since its establishment, LDHB(Luoyang Longding Environmental Technology Co., Ltd.) has been committed to the research, design, manufacture and service of washing mechanism sand and gravel, tailings treatment, piling mud purification and waste incinerator slag treatment process.

LDHB adheres to the road of technological innovation, constantly market-oriented, and relying on advanced products, gradually establishes a united and efficient research, manufacturing and service team, we have a group of senior scientific researchers and engineers, including mechanical design, mechanical manufacturing, electrical control, environmental protection and other professionals. Through strengthening management and core technology innovation, on the basis of fully absorbing foreign advanced technology and solutions, we have independently developed advanced technologies and equipment in the fields of mine tailings, municipal shield foundation construction, and river dredging.

LDHB not only has a professional equipment manufacturing plant, but also established a professional team in design, quality inspection and control, installation and commissioning, and after-sales service. The workshop is equipped with advanced mechanical processing equipment, testing equipment and experimental equipment. We strictly manage, keep improving, design and manufacturing level constantly improve, and strive to provide our customers with real advanced and reliable products and satisfactory service!

Our series of products are exported to United States, Mexico, Serbia, Australia, Vietnam, India, Nepal, etc. more than ten countries, and are highly praised by customers. Our goal is to become the world's leading supplier of process solutions in the field of mineral processing. LDHB hopes to cooperate with all customers to make unremitting efforts to improve our living environment, promote the rational use of resources and achieve sustainable economic development.