What is the difference between Guangdong Hongtu (Zhaoqing) Technology Co., Ltd. and Dongguan Hongtu Precision Die Casting Company?

Guangdong Hongtu Technology Co., Ltd. is a joint-stock company restructured from Gaoyao Hongtu Industrial Co., Ltd. in 2000. The former Gaoyao Hongtu Industrial Co., Ltd. was established in 1988, and was jointly established by Hong Kong Hongtu and Gaoyao Municipal Economic Commission. Later, 1992 split, and Hong Kong Hongtu withdrew. Shangsha Hongtu, now Dongguan Hongtu, was established in Shangsha, Chang 'an, Dongguan. The boss of Dongguan Hongtu used to be an investor in Gaoyao Hongtu, but