people popularity ranking 1 shenzhen gaokong huixin cleaning service co., ltd. is a professional exterior wall cleaning company, mainly providing shenzhen high-altitude exterior wall cleaning, building curtain wall cleaning, building exterior wall cleaning, glass curtain wall cleaning, hotel cleaning, and high-altitude cleaning services. the business covers shenzhen, guangzhou, dongguan, foshan, shantou, zhuhai, zhongshan, huizhou and other places. 30 strip
