A coil is the long-burn answer to a problem sticks cannot solve. Where a stick gives you well under an hour, a coil holds the same aromatic body in a spiral that runs for hours on one light. That is why temple supply, ceremony and hospitality reception are the channels that buy them. The spiral is not decorative — it is simply the longest line of incense that fits inside a censer, and every design decision on this line follows from that.
Specify duration, not size. Burn time is a function of three things: coil diameter, cross-section thickness and turn count. A wider coil with a thin section can burn for less time than a smaller coil pressed heavier. So a diameter alone tells you almost nothing. Tell us the burn duration your channel actually needs. A two-hour service, an eight-hour retail day, a full night at a reception desk. We specify the geometry backwards from that rather than quoting a stock coil and hoping it fits.
Freight is the line item buyers underestimate here. A coil is a thin spiral of pressed powder with no core to hold it together. It breaks if it is packed loosely or handled roughly. Coil freight cost per unit is higher than anything else in our range for exactly that reason. The difference shows up in the landed cost rather than the unit price. Nesting, interleaving and carton fill do most of the work; ask for the drop-test result on the packing configuration we intend to use before you commit to a quantity, not after the first container arrives.
The material is identical to our stick line: powdered plantation Aquilaria bound with natural makko, no charcoal and no synthetic accelerant. This matters more in coil format than anywhere else. A coil burns in one continuous piece over a long period, often in an enclosed censer. A charcoal-bound coil running six hours in a closed vessel puts noticeably more particulate into the room than the same mass burned as sticks.
On paperwork, the declaration matters more than the format. Declare the natural makko binder explicitly on the commercial invoice. A generic "incense preparation" description is what gets a consignment reclassified as a chemical product and held at destination. We write it that way on every invoice we issue. Which permits and certificates your import route requires is a separate question for your broker, worth settling before you book.
The coil exists for one reason: burn duration without an attendant. A 50 mm five-turn coil runs several hours from a single lighting. That is why temples, shopfronts and hotel lobbies have used the format for centuries and why it still sells where a stick cannot. If your customer is asking for something they can light in the morning and forget, this is the answer, and no length of stick substitutes for it.
The specification that decides whether a coil works is cross-section, not diameter. Ours run at 1.8 mm, which sits at the lower edge of the range the group standard describes at 2.0 ± 0.2 mm. A thinner cross-section burns cleaner and produces less ash, and it is also more fragile in transit. Those are the same property described twice. If your route involves multiple transhipments or manual handling at the far end, say so when you order and we will pack to the risk rather than to the default.
Breakage is the number every coil buyer should ask about and almost none do. A coil is a spiral of unsupported material and it will not survive being dropped. So the packing does the work: each coil sits in its own moulded tray, trays stack with a spacer. And the master carton is drop-tested rather than assumed. Ask any supplier what their breakage rate is at destination and how it was measured. A supplier who has never measured it is telling you that the losses are currently yours.
On lighting and merchandising. A coil is lit at the outer end and rests on a stand that lifts it clear of the surface. That means the holder is not an accessory here. It is part of the product. Selling coils without a compatible stand generates exactly the same complaint every time: the customer lays it flat, it self-extinguishes where it touches, and the coil gets blamed. Bundle the stand, or at minimum merchandise the two adjacently and say plainly on the packaging that one requires the other.
A closing note on how to write the order. Name the outer diameter, the number of turns, the cross-section and the pack count, and state the destination climate if it is humid. Those five entries remove almost every ambiguity in this category. The last of them is the one people leave out. A coil specified without reference to where it is going is a coil packed to the default, and the default assumes a temperate warehouse.
