Kei Gongyi me te 200 mita noa atu i te teihana tereina.Ko Wangda Machinery he pokapū hanga miihini pereki kaha i Haina.Hei mema o Haina Bricks & Tiles Industrial Association, i whakaturia a Wangda i te 1972 me te neke atu i te 40 tau te wheako i roto i te waahi o te hanga miihini pereki.Wangda Brick Making Machine e tino whakawhirinakihia ana e nga kaihoko, kua hokona ki te neke atu i te rua tekau nga kawanatanga me nga taone nui o Haina me te kaweake ano ki Kazakhstan, Mongolia, Russia, North Korea, Vietnam, Burma, India, Bangladesh, Iraq, etc.