NOW Foods Supplement Quality & Safety

Does anyone have any experience with this brand?

I got Magtein Magnesium L-Threonate from the company but read a customer review where some guy thinks their product Magnesium Bissglycinate may be buffered with Magnesium Citrate.

On their website they claim that their labs rank world-class standard which could just be a good marketing. Does NOW also have a third-party lab testing of their products to ensure good quality & safety?

ConsumerLab.com has Recalls & Warnings section where NOW is mentioned a couple of times but I'm not a member so I can't see it.

Thanks.