Kaishan group is a state-level large scale enterprise in China , which has been listed among the five industries of Zhejiang Provincial government, the 958 Technology Catching-up Plan and the key enterprises by Zhejiang provincial government. The group is the civilized enterprise of provincial level and contract abiding and trustworthy enterprise of state level. Currently, Kaishan group has 18 subordinate companies with over 4100 employees. It covers an area of over 430, 000 m2 with the total building complex area over 230, 000 m2 and the total assets of the group amounts to over 1.5 billion. �Kaishan� trademark, together with its logo, is the first company awarded with �Chinese renowned trademark� in the same trade and Kaishan air compressor is among the first exempted by Chinese government.