Cannot get link from missing tbody tag (web scraping)

I want to get the link in order to download the pdf in tbody tag, but the tag didn’t show up after getting the HTML source code. How to get those links. Here’s the website: https://www.nexeoplastics.com/types/plastics-product-finder?s=TPU

Here is my code:

from bs4 import BeautifulSoup
import requests

r=requests.get(“https://www.nexeoplastics.com/types/plastics-product-finder?s=TPU”)
soup=BeautifulSoup(r.content,”html.parser”)

table = soup.find_all(id=”maintable”)
print(table)

The results only shows thead, but not tbody, can anyone whelp me to get the link?