Waste Management

For non-hazardous waste, the recyclable parts will be sold or sub-processes, while the non-recyclable parts will be sent to the environmental sanitation organization regularly for disposal. For hazardous waste, each subsidiary shall clarify the names, sources, characteristics, hazards and treatment measures of various types of hazardous waste, the organization and its responsibilities for accident emergency response, as well as the precautionary measures against the accidents, etc. In addition, we established hazardous waste storage areas to classify wastes and store them according to corresponding requirements, and finally send them to qualified third-party agencies for disposal compliance. During the Reporting Period, Sunny Zhejiang Optics confirmed the disposal method of all outgoing waste, giving priority to qualified treatment providers who can recycle the waste, and ultimately achieving the target of “zero waste to landfill”.
During the reporting period, the Group developed a waste management plan:
Development of action programs to reduce waste emissions;
Selection of environmentally friendly materials in the development of new products and reduction of waste emissions;
Organizing employees waste training to enhance their environmental awareness;
Increasing waste recovery and reducing waste disposal.


In 2023，the KPIs of the Group’s  emission level  are as follows:

Category	Unit	2023	2022	2021
Sulphur dioxide (Note 1)	Kg	1.0	0.8	1.0
Nitrogen oxides(Note 2)	Kg	605.7	466.2	515.3
Particulate matter (Note3)	Kg	57.8	44.4	49.0

 

Hazardous waste (Note 4)	tonnes	93.0	86.8	46.6
Hazardous waste intensity (Note 5)	Kg / RMB million revenue	3.4	2.8	1.3

 

Total non-hazardous waste	tonnes	7,197.7	8,706.0	8,492.8
General non-hazardous waste	tonnes	3,268.1	5,057.6	4,842.1
Recycled waste	tonnes	3,929.6	3,648.4	3,650.7
Non-hazardous waste intensity	Kg / RMB million revenue	261.9	283.6	229.3

 

Wastewater emission (Note 6)

tonnes

2,111,903.1

1,854,973.6

1,714,642.4

Notes:
1.The emission factors of sulphur dioxide of the Group's diesel and gasoline are based on the EMFAC-HK Vehicle Emission Calculation (《香港環境保護署汽車排放計算模型》)。
2.During the Reporting Period, nitrogen oxide emissions increased by 29.9% due to the COVID-19 pandemic came to an end, various business exchange activities，an increase in bus mileage .
3.The emission factors of particulate matter of the Group's diesel and gasoline are based on the EMFAC-HK Vehicle Emission Calculation (《香港環境保護署汽車排放計算模型》). During the Reporting Period, particulate matter emissions increased by 30.2% due to the COVID-19 pandemic came to an end, various business exchange activities，an increase in bus mileage .
4.During the Reporting Period, due to due to the introduction of new products and the increase in production equipment and production process of the Group, which led to an increase in the use of auxiliary materials. Total amount of hazardous waste increased by approximately 7.1% as compared to the year of 2022.
5.During the Reporting Period, the Group's hazardous waste intensity increased by approximately 21.4% compared with the year of 2022 due to the year-on-year increase in the Group's total hazardous waste and year-on-year decrease in revenue.
6.Wastewater emission is empirically calculated at 80% of water withdrawals.