Corporate Sustainability Rreport

Friendly Production

Water Management

Forging, welding, thermal treatment and surface processing are our primary manufacturing processes. In 2018, our water consumption came to 26,024M3 - an increase of 3,600M3 compared to that of 2017. Due to the pipeline at our Factory 2 and float valve issues, we had an overflow of water by 2,861M3. Consequently our water consumption for operation (M3/NTD 1,000,000) increased to 9.19. Presently we have arranged for more onsite patrols and taken short-term corrective actions and will evaluate the necessity of installing new detectors for overflow and utilize automatic notification in the event of anomalies as the long-term preventive action. without overflow, our water consumption for operation reduced from 8.45 in 2017 to 8.18 in 2018. Few chemicals are used in our processes. Mostly is the salt bath medium (with NaCl and KCl as the main ingredients) which creates limited wastewater because of low quantity and recyclable. Our salt bath wastewater is compliant with pipeline discharge standards and is not required for further treatment. From our factories, the wastewater is discharged to the water treatment plant of Taichung Industrial Park. We routinely sampled and tested our wastewater to ensure law compliance.

Waste Management

We had two types of industrial waste that we outsourced for transport and treatment in 2018. Firstly, waste cutting and hydraulic oil. In 2018, there were 11.2 tons of waste oil. The other type of industrial waste is slag (Code:2499) - the solid substance generated by the salt bath medium at a high temperature with falling chips of raw materials in the furnace. There were 69.4 tons of slag in 2018. The rest are recyclable wastes, such as iron and aluminum materials, pallets, paper and plastics in extremely low quantities. We have outsourced qualified waste collectors for proper treatment. By analyzing the amount of waste iron we recycled over the years, the quantity has reduced significantly since 2016 that demonstrates the success of our continuous improvement projects. Nevertheless, due to excessive orders in 2018 that exceeded the capacity of our outsourced processing supplier, there was 52.08% increase of in-house forging processes for the entire year. Although we were able to reduce the quantity of waste by tooling inspection and preventive maintenance, we still faced 39.57% increase of waste iron from the forging process. The analysis is not accurate due to improper waste classification. In 2019, we will conduct the statistical analysis and improvement procedures based on classifications such as trimmed material from forging, waste iron from processing, NG/test product, and other miscellaneous items.

Energy-Saving Accomplishments

There’s no better way to ensure optimal energy conservation and carbon reduction performance except the purchase of high-efficiency equipment, YOKE prepared the new equipment purchase list that includes all newly purchased machines/equipment and air compressors in 2017. All the purchased equipment has to meet at least IE3 or higher specifications of the Minimum Energy Performance Standard (MEPS). The amount of electricity consumed in 2018 by YOKE was 10,690,508 kWh, which, when converted to heat (109 joule (GJ)), was 38,485.83 GJ, an increase of 7,358.33 GJ from 2017. A main reason for the increase is the growth in revenue of 2018 and the growth in the production. The electricity consumption density calculated based on our annual revenue came to 13.59 (GJ/NTD million); an increase of 8.13% from 2017. The primary cause for the increase was the reduction in our outsourced manufacturing, caused an increase in in-house production and a substantial 52.08% increase in forging processes and 28.57% in processing operations. The increase in in-house processes has led to the increase in our energy intensity. In 2018, YOKE continued to participate in the Taiwan Industrial Greenhouse and Energy Reduction Services Corps. organized by the Industrial Development Bureau. Taking the advice and suggestion from experts and scholars, we decided to declare our energy consumption in three major categories of equipment, electromechanical and general affairs. The conversion works out to a reduction in our annual power consumption by approximately 200,000 kWh and helps YOKE to achieve the goal of saving power consumption by 1% per year. The following table shows the energy we were able to save from each energy-saving solution in 2018. The amount of energy conserved is derived from the improved power ratings over the estimated number of operation days over an entire year.

Energy conservation projects in progress Yearly estimated power saving (kWh)
Connection to air compressor cooling tower for energy conservation 3,456
Reduction of heating temperature for the flash butt welding and thermal bending processes 11,404
Adjustment in temperature control fan speed for cooling tower (3 equipment) 31,361
Improvement in air-conditioner energy-saving performance in administrative building 30,134
Replacement of LED lamps in the operating area at Factory 2 14,620
Replacement of AHU at Factory 2 to ventilation cabinet 81,988
Increased the indoor temperature setting for operating area at Factory 2 by 4°C 31,363
Total power savings 204,326

Construction of new factory

As our Factory 3 at Chuansing Industrial Park is an existing facility purchased directly from other companies, our options on energy-saving measures are fairly limited. When we initiated facility renovation and equipment procurement planning in 2018, we decided to use LED lamps and at least IE3 air compressor and water chiller. In addition, we will also install inverter on our control fan, faucets with water-saving labels and daylighting panels. These constructions and installations will be completed in 2019.

Green Culture

As we initiated the introduction of ISO 14001 environment management system in November 2018, we reached a new milestone for the Company in the area of environmental protection. In our retrospection of previous efforts in environmental protection, despite our sustained input of resources and improvements, YOKE has lacked a systematic mechanism for management. And as such, we evaluated the feasibility of introducing ISO 14001 and hope that through the process of promotion, we will be able to demonstrate our resolve and commitment to environmental protection in a more systematic approach. We are scheduled to complete our management system verification procedure in June 2019.

On a related note, we have come to realize that environmental protection must begin with the creation of green culture. And as such, we sought out in the tasks of relevant design and implementation for our green area at our headquarters and aimed for specifications that are superior to the legal requirements by commissioning professional horticulture companies to handle the greening of our premises by designated personnel so that we can create a more pleasant working environment for all employees. YOKE adopts hill land in the Taichung Industrial Park to help beautify the surroundings. Within its premises, on the other hand, water-saving devices are added to faucets for water used to support livelihood. The light-out time is centrally controlled for respective office areas through the central air-conditioning system. In addition, there is the inspection mechanism to confirm that lighting has been properly turned off. Kitchen wastes are collected and transported every day by the contractor for feeding pigs. YOKE also promotes classification of waste resources for recycling purposes on its premises and makes sure that each department properly classifies recyclable resources from the trash discarded.


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39, 33rd Road, Taichung Industrial Park, Taichung 407, Taiwan 

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#39, 33rd Road,Taichung Industrial Park, Taichung 407, Taiwan