Sustainability

Tongjiang's environmental and energy performance is certified and audited. The company holds ISO 14001:2015 and ISO 50001:2018, and the energy certificate carries measured consumption figures rather than a stated ambition.

The numbers below come off the certificates. The improvement is small. It is also real, which is the part that took an auditor to confirm.

Environmental and Energy Management at a Glance

Environmental certification	ISO 14001:2015, Certificate No. 18122E20706R1S, valid through September 29, 2028
Energy certification	ISO 50001:2018, Certificate No. 21125En10013R0S, valid through October 9, 2028
Energy performance, 2024	56.11 kgce comprehensive energy consumption per ton of product
Energy performance, Jan to Aug 2025	55.94 kgce comprehensive energy consumption per ton of product
Measured change	A 0.3 percent reduction, verified under third-party audit
Supply chain footprint	Located in the Yangtze River Delta raw-material corridor, shortening inbound logistics

Environmental Management

ISO 14001:2015 (GB/T 24001-2016 equivalent, certificate no. 18122E20706R1S), covering steel wire rope production and the environmental management activities around it. First issued 30 September 2022, renewed 29 September 2025, valid to 29 September 2028.

Energy Management

ISO 50001:2018 (GB/T 23331-2020 and RB/T 119-2015 equivalent, certificate no. 21125En10013R0S), issued 10 October 2025, valid to 9 October 2028.

The audit boundary is wider than most people expect. It covers the main production system (wire drawing, twisting and rope assembly, with steel as the primary raw material), the auxiliary systems (power distribution and transformation, air compressors, environmental protection equipment, warehouses, testing equipment, forklift transport), and the administrative office.

Within that boundary, comprehensive energy consumption per ton of product measured 56.11 kgce for 2024 and 55.94 kgce for January to August 2025. That is a 0.3 percent reduction, confirmed by third-party audit rather than reported by the company.

Supply Chain

The Nantong plant sits in the Yangtze River Delta, among the steel producers it buys from. Wire rod does not cross the country to get here, which takes real transport out of the supply chain rather than offsetting it on paper.

Frequently asked questions

Yes. Tongjiang holds ISO 14001:2015 certification (Certificate No. 18122E20706R1S), covering the environmental management activities tied to steel wire rope production. The certificate was renewed September 29, 2025 and is valid through September 29, 2028.

Energy use is certified under ISO 50001:2018 (Certificate No. 21125En10013R0S) and audited against a defined boundary covering the main production system (wire drawing, twisting, rope assembly), auxiliary systems (power distribution, air compressors, environmental protection equipment, warehouses, testing equipment, forklift transport), and the administrative office. The certificate is valid through October 9, 2028.

Comprehensive energy consumption per ton of product was 56.11 kgce across all of 2024, and 55.94 kgce for the January to August 2025 audit period, a measured reduction of about 0.3 percent.

The main production system covers wire drawing, twisting, and rope assembly, using steel as the primary raw material. Auxiliary production systems include power distribution and transformation, air compressors, environmental protection equipment, warehouses, testing equipment, and forklift transport within the factory. The administrative office is included as an ancillary system.

The Nantong facility is located in the Yangtze River Delta, a concentrated raw-material and manufacturing region in China. That location shortens the distance wire rod travels from steel producers to the factory, reducing inbound transport compared to sourcing from more distant regions.