China's General Administration of Quality Supervision, Inspection and Quarantine in foreign countries have four authorized companies, respectively: Europe, North America, Japan, Hong Kong. Inspection and quarantine costs incurred in foreign countries than in Hong Kong to do inspection and quarantine costs much higher.
(2) If there is a problem during the customs clearance process, except for consumer goods such as cigarettes and alcohol, which are subject to tax at the time of entry into Hong Kong, the equipment category is zero tariff at the time of entry into Hong Kong, so you don't have to worry about paying a high amount of tax.
(3) If the goods are sent directly to Shenzhen, they are imported without license.