Olin Industries AB review: chemicals

Qingdao Sigma Chemical C0., Ltd scammed us last week out of 310 USD. They are the worst crap people I have encountered in my 19 years as an inernational businessman. They say they have everythiong in stock (whatever you ask for), they ask you to pay... and then starts the lies and continue until you get frustrated and angry, andm starts to realize you got scammed. When you catch them with one lie, they changes tory like a child trying to get away from something bad they did. Never ever, even with 100% evidence will they admit any wrong doing. Constant lies 13 days straigh about the shipping of a sample with 1000 + 500 ml chemical.
The strange thing is Alibaba knows about they are scammers, because they are at plenty scam warning websites (we were stupid not to check that before payment) they have been warned by Alibaba many times, but still Alibaba staff let these scum do business at Alibaba and that has made me to completely close all business through Alibaba. This is third time jerks at Alibaba.com scam us, and Alibaba staff let them continue doing business there. That's shameful! I'm talking about obvious constant lies and obvious scam attempts by sellers at Alibaba. During the last three years we've been scammed by 4 companies there. I want to add that we've done maybe 100 successful business' as well through Alibaba, but I feel Alibaba do absolutely nothing about the scammers, and therefor our company closed down our account at Alibaba. I warn everyone who is thinking about buying anything at Alibaba to do a thorough background check, not only read reviews and how many sellings the company has done at Alibaba. it's a VERY HIGH risk to be scammed at Alibaba, i would say +50% of all sellers there are using dirty non-acceptable selling techniques as far as 'm as a European am concerned.
Don't waste money and time, rather buy from a safe source and pay a little more. We will never buy from China again, because the whole country is a rip-off mentality towrds us overseas buyers. Very ugly methods, in deed, even those who you think you've established a good contact with after some +5 sales, will when there is a chance try to add hidden cost, rip you off in one way or another for some funny amount of 10-50 USD, uit's redicouless how far they go to get 10 bux. Ufortunately this is a fact to me after some +100 purchases from China last five years.
Marius Vabnick, from SWEDEN