Shanghai Heaven Import & Export Co.,Ltd. is engaged in import and export promotion products, especially solar water heaters since 1987 , that specializes in various solar products such as, solar vacuum tubes, non-pressurized and pressurized integrative solar water heaters, split solar water heaters, heat pipe/ U pipe/ flat panel solar collectors, split pressurized water tanks and all accessories. Solar water heaters are environmentally and cost very effective, high quality by a guarantee ...