Construct

Item

Green purchasing (Zhu et al., 2008a)

Eco labeling of products.

Cooperation with suppliers for environmental objectives.

Environmental audit of suppliers’ internal management.

Second-tier supplier environmentally friendly practice evaluation.

Eco-design (Zhu et al., 2008a)

Design of products for reduced consumption of material/energy.

Design of products for reuse, recycle, recovery of material and/or component parts.

Design of products to avoid or reduce use of hazardous products and/or their manufacturing process.

SMEs performance

(Sadiku-dushi et al., 2019)

My firm is usually satisfied with sale growth.

My firm is usually satisfied with market share growth.

My firm is usually satisfied with return on sales.

My firm is usually satisfied with net profit margins.

My firm is usually satisfied with gross profit margins.

Environmental performance (Zhu et al., 2008a)

Reduction of air emissions.

Reduction of effluent waste.

Reduction of solid wastes.

Decrease in consumption for hazardous/harmful/toxic materials.

Decrease in frequency for environmental accidents.