I am S.Waseem, engaged in selling Maltodextrin in Russia, thus, it is extremely important for me to select a reliable supplier of Maltodextrin.
Google “Company Name”
A renowned company name usually shows a great deal results on Goolge Search, because its company name is frequently searched by their customers or cited by other web sites.
Take “Foodchem International Corporation” as an example, as has been showed in the below picture, there comes out more than 298,000 searching results on Google. 
Supply of Products
Compared with Manufacturers, other than service advantage, main advantage of trading companies lies in being able to provide various kinds of products. For example, when we would like to order Maltodextrin as well as several other food ingredients, trading companies becomes the best choice, since unlike factories, traders can provide one-stop service and have greater bargaining powder which permits a lower price.
Of course , we can purchase Maltodextrin directly from manufacturers if the volume is large enough, but it won’t be a bad choice if we keep in touch with some large-scaled traders. Because once your long-term-cooperate factory is in short of Maltodextrin , we can turn to trading companies, who can help to find other suppliers shortly or even direct supply Maltodextrin in no time.
As far as we know, big suppliers of food additives and ingredients can basically provide more than 100 kinds of products, among which, Foodchem International Corporation are able to supply overseas customers more than 300 kinds of food additives and ingredients, plant extracts, nutritional supplements, apis, etc.
Sales of Supplier
There are tons of suppliers of Maltodextrin in China, thus, supply scale should be important, Maltodextrin suppliers with a certain size suppliers tend to have more bargaining power, in some country, we can even find their Maltodextrin supply volumes through customs data.
Certificate
A formal operation supplier of food additives normally passes ISO certificate as well as other well-known certificate like halal, kosher, ect.
Location
Generally cargo takes ship delivery; thus, sustainable trading companies tend to set their sites in coast cities, such as Shanghai, Qingdao, and Tianjin in China.
Warehouse
Warehouse is also important for Maltodextrin suppliers, Maltodextrin traders make judgments through Maltodextrin market situation. On one hand, while Maltodextrin is in the upside, traders purchase bulk Maltodextrin for storage, and sell with the price advantage; On the other, vendors need to keep cargo in warehouse in case customers need LCL loaded.
Foodchem International Corporation owns an EDC warehouse in Shanghai, an advanced warehouse system which only few trading companies in Shanghai can provide, it avails fast delivery within 1 week.
History of Supplier
History counts for a lot, a supplier with long history in the Maltodextrin industry has a wealth of experience to accurately grasp the Maltodextrin market, most of unexpected problems can be solved timely and accurately. The Chinese government gives all the enterprise a issued business license, from which history of enterprises can be found. Under such a fierce competition of Maltodextrin market, enterprises who can survive over five years can normally be trusted.
The picture below shows the license certificate of Foodchem International Corporation, China’s leading supplier of food additive and food ingredients with establishing year of more than 8.
http://www.foodchemadditives.com/products/maltodextrin