Taiwan's manufacturing SMEs have played an important role in promoting trad
e, creating jobs, and developing certain industries. Yet, they might not ha
ve performed uniformly over time, nor always looked alike. This paper explo
res the changing position and the source of changes of Taiwan's SMEs during
the last three decades. We have found, first, that the industrial developm
ent in the 1960s was attributable more to larger firms than SMEs. It was in
the 1970s and after that SMEs gained competitiveness consistently. Second,
among SMEs, the smallest firms employing fewer than 10 persons became prog
ressively less important in Taiwan's manufacturing sector until the last su
b-period between 1986 and 1991. Medium-sized firms, employing 10 to 99 pers
ons, performed very well over time. As the survival principle suggests, kee
n competition assures efficiency among SMEs. Then, a quick response to mark
et signals is also vital for survival. An industrial policy not against SME
s may be the best that SMEs can expect. A stable macroeconomic environment
combined with an open market having low entry barriers and low transaction
costs provides the best opportunity for SMEs to grow.