http://hac.lk/certified/companies-list
As non-Muslims, Why we should pay for a concept that we don't believe and not comply with our religion and the culture. There are sufficient standards and regulations defined for consumer products. If someone believes that doesn't enough they can raise their concerns to the relevant authorities. Separate entity is not required and that is violating the rights of other communities and that is discrimination for our selves.
And there is another issue, which affects the non-muslim venders. If this certification grantees the quality of the product then they should closely inspect the production process and the raw material. In another word, this organization gains access to the secret recipes of the market-leading products. So they can easily replicate any product and ruin the current market leaders. Finally, they will dominate all sectors in the consumer market. (If you closely analysis, There are lots of examples !!)