Index

Variable description

Sign

Explained variable

Collaborative order

Order degree of electronic and communication equipment manufacturing subsystem and synergy degree of composite system

Ln CD

Explanatory variable

Economic development level

Per capita GDP

Ln PGDP

Government support

Government funds in internal expenditure of R & D funds

Ln GS

Market activity

Technology market turnover

Ln TMT

Innovation ability

Innovation efficiency

Ln IE