These companies do business with China because they use cheap slave labor. China has no quality control. They have sold heparin to US companies that KILLED PEOPLE.
Everything coming out of CHINA is suspect especially if it involves food, pet food or medicinal products.
These US companies also buy “ingredients that go into these food and medicinal products also and they are SUSPECT ALSO.
There is no quality control on these ingredients either.
US companies get what they pay for and then foist inferior and dangerous products on Americans.