About product and suppliers:
            2,915 medium level products are offered for sale by suppliers on Alibaba.com, of which levels accounts for 1%, laser levels accounts for 1%. 

A wide variety of medium level options are available to you, 

There are 2,915 suppliers who sells medium level on Alibaba.com, mainly located in Asia. The top countries of suppliers are United States, China, and Vietnam, from which the percentage of medium level supply is 1%, 96%, and 1% respectively.