Dong Yang is the Best Partner
We promise that we will commit our utmost efforts to develop
new technologies and improve our product quality in a consistent
manner to achieve customer satisfaction.
Dong Yang is the Best Partner
We promise that we will commit our utmost efforts to develop
new technologies and improve our product quality in a consistent
manner to achieve customer satisfaction.
> Technology > Certification Status
| Classification | Title of certification | Date certified | Scope of certification |
| 1 | KS | 1991. 3 | Refrigerant stop valve |
| 2 | Promising and advanced technology company | 1996. 8 | Selected as a promising and advanced technology company |
| 3 | ISO 9001 | 1997. 3 | Certified for the international quality system (all items) |
| 4 | Outstanding technology company | 1997. 6 | Selected as an outstanding technology company |
| 5 | Registration of utility model | 1999. 11 | Heat exchanger pipe |
| 6 | Registration of design | 2000. 6 | Heat exchanger pipe |
| 7 | Registration of design | 1998. 10 | Condenser pipe |
| 8 | EM | 1999. 12 | Evaporative condenser (certified as outstanding part materials) |
| 9 | EM | 1999. 8 | Unit cooler (certified as outstanding part materials) |
| 10 | ISO 14001 | 2001. 3 | Certified for the international environmental system (all items) |
| 11 | Venture company | 1999. 4 | Certified as a venture company |
| 2001. 1 | Certified as a venture company | ||
| 2003. 7 | Certified as a venture company | ||
| 12 | ISO 14001 | 2001. 3 | Certified for the international environmental system (all items) |
| 13 | CE | 2008. 8 | Evaporative condenser |
| 14 | CE | 2008. 11 | Unit cooler |
| 15 | Laboratory | 2008. 6 | Certified for its dedicated research and development laboratory |
| 16 | Promising export SME | 2009. 6 | Recognized as a promising export SME |
| 17 | Patent registration | 2010. 1 | Refrigerant recovery and charging device |
| 18 | Export small giant | 2011. 7 | Certified as an export small giant |
| 19 | Inno-Biz | 2008. 09 | Certified as a technology innovation enterprise |
| 2011. 08 | Certified as a technology innovation enterprise | ||
| 20 | Vision enterprise | 2011. 11 | Selected as a vision enterprise |
| 21 | NB | 2008. 11 | Boilter & Pressure Vessel |
| 2012. 02 | Boilter & Pressure Vessel | ||
| 22 | U Stamp | 2008. 11 | ASME Boilter & Pressure Vessel Code |
| 2011. 12 | ASME Boilter & Pressure Vessel Code | ||
| 23 | CE | 2012. 09 | Pressure vessels PED |
| 24 | Gost | 2012. 09 | Pressure vessels PED |
| 25 | CE | 2014. 02 | Contact Freezer |
| 26 | CE | 2014. 03 | Refrigerant Recovery Recycling Machine |
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