a. What are the effective methods to reduce ACOS?

b. What are the ways to develop products? (No less than 10 methods)

c. How to determine the supply-demand ratio of a product

d. What important indicators of the product need to be analyzed for data analysis?

e How to determine whether the product you developed is suitable for entering the market?

f. What are the dimensions of product differentiation?

g. What are the factors affecting KW ranking?

h. How to stabilize KW ranking?

i. How to control the flash sale effect (easy to control and effective methods)?

j. What are the effective methods for keywords to be on the homepage?

k. What are the methods for establishing private domain traffic?

l. What are the websites for off-site volume (websites that can be operated)?