You can buy the brand name like Uniqlo, H&M, Zara, Marks & Spencer because they will have testing control in term of fabric and flammbility.
For Japanese label, it should be okay to buy even they produce in China because their testing requrirement + needle detection are quite serious in garment industry.
Of coures, if you can afford, Tommy, Ralphe, brand label that you are needless to scare......