To see how green supply chain initiatives differ
between dichotomous characteristics of the firms, t-
tests were conducted on green supply chain initiatives
by age of the firm (new and old firms), type of product
(consumer and industrial product), number of
suppliers (small and large), and participation in
green-interested associations (yes and no). Table 12
discloses that there are no significant differences in
green supply chain initiatives between new and old
firms, and between consumer and industrial
products. However, there are significant differences
in green purchasing and eco-design between small
and large supplier base. The mean values indicate
that green purchasing and eco-design are adopted
by firms that have large number of suppliers
compared with firms that have small number of
suppliers. The table shows also that there are
significant differences in all the three types of green
supply chain initiatives between firms that participate
in industry, trade or professional associations that
have interest in green issues and firms that do not.