Industrial equipment and components, other than those specified in 2B350.d, as follows: N.B. SEE ALSO III.A2.009. Heat exchangers or condensers with a heat transfer surface area greater than 0,05 m 2 , and less than 30 m 2 ; and tubes, plates, coils or blocks (cores) designed for such heat exchangers or condensers, where all surfaces that come in direct contact with the fluid(s) are any of the following: a. Made from any of the following materials: 1. Alloys with more than 25 % nickel and 20 % chromium by weight; 2. Fluoropolymers; 3. Glass (including vitrified or enamelled coating or glass lining); 4. Graphite or ‘carbon graphite’; 5. Nickel or alloys with more than 40 % nickel by weight; 6. Tantalum or tantalum alloys; 7. Titanium or titanium alloys; 8. Zirconium or zirconium alloys; 9. Silicon carbide; or 10. Titanium carbide; or b. Made from both stainless steel and one or more of the materials specified in II.A2.015.a. Note: This item does not cover vehicle radiators. Technical Note: The materials used for gaskets and seals and other implementation of sealing functions do not determine the status of control of the heat exchanger.