Foreign trade Sales Clerk Exams-Air Filters

Foreign trade Sales Clerk Exams-Air Filters

Name:                           Points:

B. Air filter products fill in the blank in English, 2 points each space.

1) Air Filters overall divided into: (          ) (          ) (          ) (          )

2) Please list efficiency of below air filter:

Primary Air Filter：

Secondary Air filter：

HEPA air filter：

ULPA air filter：

3) Cited three different styles of HEPA filter           ) (          ) (          )

4) Cited three kinds frame material of Mini-pleated HEPA filter (       ) (       ) (       )

5) There separator materials of HEPA filter with Clapboard: ( ) ( )

6) Efficiency bag filter another English Name: