1. Factors Affecting Supply
Change in supply
caused by a change in non-price factors
(e.g. cost, state of technology)
represented by a shift of the entire supply curve to
the left (or right) when supply decreases (or
increases).

2. Input price/Factor prices e.g. wages and raw materials
e.g. Wages for workers
(wage cut/less commission fee for the salesperson),
supply
State of technology--Improvement in technology
e.g. Breakthrough in technology of mobile phone network
mobile phone network supply

3. Changes in the price of related goods---Joint supply
Price of one good quantity supplied
Supply of another goods
e.g. unique SMS service  popular
price
quantity supplied
Sellers’ expectation
Price expected to drop
Salespeople try their bestattract more customers to sign contract at a higher price
Supply ensure enough mobile phone sim cards for the market.

4. Change in Supply due to change in non-price determinants

5. 1997
1998
1999
2000
2001
Number of public mobile radio-telephone subscriber units
(thousands)
2128
2898
3990
5234
5702
Number of public mobile radio-telephone subscriber units per 100 population
32.7
44.0
60.1
78.0
84.4