We also show that the domestic government can grant the quality-related R &D subsidy to induce the domestic firm to raise its product quality and to leapfrog the rival imports if the exogenous quality level of the imports is not high.

• 当本国厂商为低品质产品生产者时，本国厂商将提供最差之品质水准；如果本国厂商与外国厂商的品质水准差距不是很大（非常大），则本国政府可（无法）利用补贴政策诱使本国厂商成为高品质产品生产者，产生品质逆转的现象。