My 2 bits (half a nibble), you should be fine to work with the company - they are in Taiwan and established in 2000. That is 23 years++ of experience. The component is a resistor and nothing earth shattering with respect to technology.
Do ask about any approvals / certifications that may be required for your market - ie. automotive, etc.
Aside from the above - there are many many choices in the resistor market. For example, one gorilla in the market that comes to mind is:
https://www.tyohm.com.tw/index.php?lang=enI recall their very large sign (painted on the backside of their many buildings?) in the ride in from the Taipei airport into the city. This firm has been around since 1975.
There are others like Walsin, etc. you may wish to consider.
If you are on the hunt for new vendors for this and other electronic components, make it a point to attend the large group of electronic trade fairs in Asia this coming fall. We have been attending for the past 20 years and always see a value if we can align with one new vendor. In the fall, you can consider to visit Taitronics (October) / HK Electronic fair (Wanchai) / Global Sources Electronic fair (HK airport expo) - each are a few days apart. Often, the HK / Taiwan government will provide sponsorship for new attendees - such as free hotel / airfare to entice new visitors. Highly recommended.
https://www.hktdc.com/event/hkelectronicsfairae/enhttps://www.globalsources.com/trade-fair/hongkongshow/ce?source=OS_HK_HP_TopTab&utm_source=1410219&WT.mc_id=1410219&WT.srch=1&gclid=Cj0KCQjw98ujBhCgARIsAD7QeAjODfKonUxzg4pfrWvM7VslvxJ-D3-8lGaW9F3K6uZ82A0hJ2Q4gccaAlJPEALw_wcBNB: Each fair is for finished electronics AND electronic raw parts / PCBs, etc. Often Floor # 3 & # 5 of the HK Fair in Wanchai hosts the raw parts vendors.