Approach to Green Procurement

Approach to Green Procurement

Today, environmental laws and regulations have become increasingly stringent, not only in Japan, but worldwide. Increasingly, customers throughout the world are inquiring about DISCO's ISO 14001 certification and requesting information on the percentages of hazardous chemicals in our products. To address these demands, DISCO offers products that are not only high-quality and low-cost with prompt delivery, but also environmentally friendly.

Outline of Green Procurement at DISCO Corporation

The Green Product Guidelines, formulated in March 2004, include items related to the consideration of environmental preservation at the time of design and development. These are intended to prevent the use of hazardous chemicals in end-of-life products that will adversely affect the global environment and human health. This concept goes along with that of the WEEE Directive*1 and the RoHS Directive*2 enforced in the EU.
Although DISCO products do not fall under the scope of these directives, we adhere to these concepts and promote green procurement in order to fulfil our corporate social responsibility. To be more precise, based on the List of DISCO Controlled Substances, we conducted tests for the presence of hazardous chemicals contained in our raw materials, parts, and equipment and are promoting restrictions on the use of such chemicals. The list covers nine Prohibited Substances such as asbestos, which use is internationally prohibited (control level A), and 10 Restricted Substances specified by RoHS Directive (control level B). In addition, SVHC (substances of very high concern) in the REACH regulation specifies substances to be reported (control level C) and substances of concern that are expected to be regulated in the future as substances to be monitored (level D). All of these substances must be reported if included in raw materials, parts, or equipment.

1 : WEEE Directive: Directive of the European Parliament and of the Council on waste electrical and electronic equipment. The purpose of the directive is, as a first priority, the prevention of waste electrical and electronic equipment (WEEE), and in addition, the reuse, recycling, and other forms of recovery of such wastes so as to reduce the disposal of waste. The Directive entered into force on 13 August 2005, whereby each producer is responsible for financing operations related to the waste from their own products.
2 : RoHS Directive: Directive of the European Parliament and of the Council on the restriction of the use of certain hazardous substances in electrical and electronic equipment. 10 substances are covered by this directive: (1) Lead, (2) Mercury, (3) Cadmium, (4) Chromium VI, (5) Polybrominated biphenyls, (6) Polybrominated diphenylethers, (7) Bis (2-ethylhexyl) phthalate, (8) Benzyl butyl phthalate, (9) Dibutyl phthalate, and (10) Diisobutyl phthalate (PBDE).

DISCO Controlled Substances

Control level A (Prohibited substances): 9 substance groups

No. Substance group Threshold value
1 Tri-substituted organostannic compounds Prohibited
2 Polychlorinated biphenyls
3 Polychlorinated naphthalenes
4 Shortchain chlorinated paraffins
5 Asbestos
6 Azocolourants and azodyes
7 Radioactive substances
8 Ozone depleting substances
9 Refractory ceramic fiber

Control level B (Restricted substances) RoHS directive substances (2011/65/EU)

No. Substance group Threshold value
1 Cadmium / Cadmium compounds ≤100 ppm
2 Chromium VI compounds ≤1,000 ppm
3 Lead / Lead compounds
4 Mercury / Mercury compounds
5 Polybrominated biphenyls (PBBs)
6 Polybrominated diphenylethers (PBDEs)
7 Bis (2-ethylhexyl) phthalate(DEHP)
8 Dibutyl phthalate (DBP)
9 Butyl benzyl phthalate (BBP)
10 Diisobutyl phthalate (DIBP)

*The total amount of cadmium, mercury, chromium VI, and lead for packing materials for DISCO products should be under 100 ppm per package, which is the standard for EU packaging and packaging waste.

Control level C (Substances to be reported)

Substance group

*Details are shown in Table 3. Substances in control level C are in the list of DISCO controlled substances.

Control Level D (Substances to be monitored)

The effects of substances in control level D on health and the environment have not yet been fully confirmed. However, DISCO originally specified substances which may have had potential effects through long-time exposure.

Substance group
Nanomaterial is a solid material manufactured using elements as raw materials, materials for which a single unit is between 1 to 100 nm, and nanostructures (including aggregated nanomaterial objects) composed of nanomaterials.

Note: The threshold value is subjected to change.

List of DISCO Controlled Substances (Substance Group)

Efforts Regarding Conflict Minerals

DISCO recognizes human rights violations related to conflict minerals*3 as a global issue. As a matter of principle, we have a policy of not using 3TG mineral resources (tantalum, tin, gold, and tungsten) derived from mines which provide a source of income for insurgent groups. We investigate and select suppliers who are not involved in conflicts of this nature.

3 : Conflict minerals are minerals extracted from the DRC (Democratic Republic of the Congo) or neighboring countries which may directly and indirectly become the source of funds or profits for insurgent groups who infringe upon human rights in the DRC area.

Precision Processing Tools and Functional Consumables Compliant with Green Procurement

Although DISCO precision processing tools (blades, grinding wheels, etc.) and functional consumables (chemical products such as StayClean) are outside the scope of the RoHS Directives of the EU, which apply to electrical and electronic equipment, we are promoting green procurement of materials used in precision processing tools and functional consumables because those products have direct contact with customer's workpieces, i.e,. wafers in processing.