| 1. | Daheng parkerizing company , limited , a hi - tech enterprise , has its headquarters based in the well - known chemical - engineering city cangzhou , hebei , china . the company puts to use whole sets of the most up - to - date metal surface - treating techniques of the present - day world in supplying treating agents for iron or steel and aluminum products , and zinc - plated materials
沧州市大恒磷化有限公司座落于全国著名的化工城河北沧州，属于高科技企业，公司引进国内外先进的全套金属表面处理技术，适用于钢铁材镀锌材铝材的表面处理。 |
