Make products according to a certain style.
Methods used in mass production with only physical objects, no technical design data or incomplete data.
There are two kinds: mapping imitation and patent imitation. Surveying and mapping imitation is a design imitation based on comprehensive surveying and mapping and taking some advanced industrial products at home and abroad as samples. Because of its mature structure and production technology, the products copied by surveying and mapping can shorten the trial production cycle and quickly turn into mass production; Patent imitation is to imitate products by introducing advanced patent materials at home and abroad.