You can find commerical lamp supplies at the following: www.commercial-lamps.co.uk/ and www.idevon.co.uk/profile/284602/.../Commercial-Lamp-Supplies-L.
You can purchase commercial horticulture supplies. You can go to www.carlinsales.com/, www.frostproof.com/, andwww.growerssupply.com/ to find commerical horticulture supplies.
You can find commercial bar supplies at stores like Costco and Sam's Club. Websites such as www.globalindustrial.com also sell commercial bar supplies.
There are many websites that sell commercial janitorial supplies. This is a website that sells commercial janitorial supplies. http://www.cleanitsupply.com/
One store where you can find commercial greenhouse supplies is Home Depot. You can also search online and find several stores that sell these supplies.
Websites such as www.uline.com and www.globalindustrial.com offer commercial janitorial supplies. You can also find Supplies at stores Such as Costco and Sam's Club.
You can find commercial swimming pool supplies at www.brockent.com/, www.doheny.com/Commercial-Pool-Supplies.html, www.cheappoolproducts.com, and www.amerimerc.com/commercial-swimming-pool-supplies.htm.
You can purchase commercial irrigation supplies at www.rainbird.com/, www.irrigationsupplydepot.com/, www.irrigationsupply.com/, and www.dripworksusa.com/.
You can find commercial coffee supplies online at www.foodservicewarehouse.com, www.centralrestaurant.com, www.coffeeam.com, and many more places.
Warehouse clubs are a good place to find commercial quantities of supplies. They usually have cleaning supplies, food, amenities and paper products that you would need.
A popular website to buy commercial bakery supplies at affordable pricing is www.bakedeco.com.
I managed to find many online buisnesses that sell commercial coffee supplies. Some of these are www.foodservicewarehouse.com, www.centralrestaurant.com and www.centralrestaurant.com
You can find affordable commercial roofing supplies from globalindustrial.com, gaf.com, and affordableroofing.net. Depending on the size of your city, you should also be able to find supplies through a local roofing company or your contractor.