United Poly Engineering [P] Ltd. Supplies Curved Instrument Trolley for Hospitals. United Poly Engineering [P] Ltd. Has received ISO 9001:2000 certifications. United Poly Engineering [P] Ltd. Manufactures stainless steel & plastic hospital hollowware & utensils and hospital furniture. Curved Instrument Trolley for Hospitals has been available in the size of 112[L] X 35[W] X 81[H] cms. Curved Instrument Trolley for Hospitals has been finished with pre-treated to prevent rust and epoxy powder coated.