Huwang Science and Technology is a large building materials group enterprise, integrating R&D, production, sales of pds protective siphon drainage collection system,rainwater harvesting, underground pipe gallery seepage water system, Vegetation ...

Shandong binzhou YanLi industry and trade co., LTD is located on the north side of 220 national road with convenient transportation developed economy. Our company was founded 2000 covered an area 1000-3000 square meters. We has our own research team quality ...