make one project and set one benchmark, standard installation manual, on-site training system, 0 accidents in the past 5 years, customer satisfaction 1 0 0 % cooperation cases cooperation cases beijing customer case huizhou customer case shanghai customer case shenzhen customer case about us shenzhen hongtu printing and packaging products co., ltd. was established in 2018 and is located in the heart of the guangzhou-shenzhen special economic zone. ~the official release of new smart watches has announced a series of exciting... ~