I am S.Waseem, engaged in selling Betaine Anhydrous in Russia, thus, it is extremely important for me to select a reliable supplier of Betaine Anhydrous.
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. 
Warehouse
Warehouse is also important for Betaine Anhydrous suppliers, Betaine Anhydrous traders make judgments through Betaine Anhydrous market situation. On one hand, while Betaine Anhydrous is in the upside, traders purchase bulk Betaine Anhydrous 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.
Certificate
A formal operation supplier of food additives normally passes ISO certificate as well as other well-known certificate like halal, kosher, ect.
Sales of Supplier
There are tons of suppliers of Betaine Anhydrous in China, thus, supply scale should be important, Betaine Anhydrous suppliers with a certain size suppliers tend to have more bargaining power, in some country, we can even find their Betaine Anhydrous supply volumes through customs data.
Google “Website”
While Googling a company website, there will be attached links along with the website on result page. It is an effective and reliable route to judge company scale and brand awareness since not a single company is able to impact Google’s objective valuation towards any company.
Exhibition
Betaine Anhydrous suppliers will never ever lose the opportunity to communicate with customers face to face on exhibitions. Although with rapid development of the network, some people choose not to attend exhibitions, while substantial companies still avail these opportunities to meet their clients and looking for potential clients.
Therefore, exhibitions provide a efficient solution to find Betaine Anhydrous good suppliers: Visit suppliers’ websites to see their participation in the exhibitions.
History of Supplier
History counts for a lot, a supplier with long history in the Betaine Anhydrous industry has a wealth of experience to accurately grasp the Betaine Anhydrous 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 Betaine Anhydrous 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.
Shipping and Payment
In order to meets different needs of buyers, according to intercoms, Betaine Anhydrous suppliers often provides several payment ways, such as FOB, L/C, D/P, T/T and so on.
Exquisite Website
Qualified Betaine Anhydrous suppliers tend to have more elaborate and professional web site, with better user experiences and less bugs or faults.