Product specification

Model: TZ-0425HD
Configuration: two-piece, elongated bowl, close-coupled tank
Overall size: 730 x 418 x 790 mm (28.7" x 16.5" x 31.1")
Flush: top-mounted dual button, 4L / 6L (1.06 / 1.58 gpf)
Flushing method: siphon jet, fully glazed 2" trapway
Drainage: S-trap, 12" (305 mm) rough-in
Material: vitreous china, smooth self-cleaning glaze
Seat height: 425 mm rim, ADA compliant toilet height range
Certification: cUPC (IAPMO), EPA WaterSense
Color: white; tank logo decal available from 300 sets
Why the Dual Flush Two Piece Toilet Design Sells Well at Retail
Two-piece units cost less to replace when a tank cracks in transit or on a job site – your customer swaps one part, not the whole fixture. The elongated bowl adds about 50 mm of seating depth over a round front, which US homeowners now expect as standard. The 4L short flush handles liquid waste, so real household consumption sits well below the 6L full flush; that is what earns the WaterSense label and lets your retail buyers claim rebates in many US water districts.
The glaze matters more than the shape, though. Our tunnel kiln runs 126 meters long with section-by-section temperature control, so the firing curve stays stable across the full load. Stable firing means fewer pinholes and a harder glaze surface – the difference between a bowl that still wipes clean after two years and one that stains.
Every Unit Is Flush-Tested – Here Is What We Actually Check
A flush failure in the field almost always traces back to four forming-stage causes, and we block each one on the line:
Rim holes: drilled at a 45-degree outward angle, count and diameter checked against the technical drawing before glazing. A wrong angle weakens the rim wash and leaves streaks.
Water channel bonding: the channel piece is positioned with a jig, not by eye, so the jet aligns with the trap inlet.
Channel cracks and air leaks: checked at the greenware stage; any leak kills siphon pull-down.
Final test: 100% of finished units go through a live flush test – ball pass, paper wash and water seal depth – before they reach the packing station. Not sampling. Every piece.
Packaging & Shipping – Built for 30+ Days at Sea

Standard export packing is a 5-layer corrugated carton with molded EPS foam blocks locking the bowl and tank separately, corner protectors on the tank lid. For LCL shipments or rough inland routes (Middle East, Africa), we add a wooden crate at cost. Cartons are drop-tested from 60 cm on corner, edge and face before a new packing design is approved.
Container loading for this 2 piece elongated toilet: about 106 sets in a 20GP, about 252 sets in a 40HQ, floor-loaded two tiers high with edge boards between tiers.
Transit breakage runs under 0.5% on our standard packing. If your receiving report with photos arrives within 7 days of delivery, any breakage above that threshold is replaced free in your next shipment or credited against the invoice – your choice. Claims settle in writing within 5 working days.
Production lead time: 25–35 days after deposit for standard white; add about 7 days in peak season (August–October). Shipment from Tianjin Xingang, 45 minutes from the plant, which keeps inland trucking cost and handling damage low.
High-Efficiency Siphonic Two-Piece Toilet with cUPC & Watersense Certification

Our factory is a large-scale sanitary ceramic manufacturing enterprise, with over 800 frontline employees, 309 modern forming production lines, and 7 high-pressure forming production lines. The factory covers an area of 600,000 square meters, equipped with one tunnel kiln of 126 meters in length and 3.2 meters in width, and two tunnel kilns of 82 meters in length and 2.8 meters in width. The annual production capacity reaches 3.5 million pieces, 80% of which are exported to countries in South America, North America, Europe, Africa, Southeast Asia and other regions.
Quality Control Case
If the flushing function of a toilet is unqualified, it must be caused by the following reasons. Our factory has analyzed the causes in detail and formulated solutions to ensure that every finished product leaving the factory is of high quality.
During the forming process, the angle of drilling the flushing holes on the toilet rim is improper.
★Solution: The size and number of the rim holes must meet technical requirements, and the holes should be inclined outward at a 45° angle.
The position of the water channel bonding device is incorrect.
★ Solution: The product design must ensure that the flushing function meets the standard, and the water channel device should be bonded in accordance with the requirements.
The water channel has cracks or air leakage.
★Solution: The water channel should be placed correctly to prevent such problems from occurring.
Insufficient water volume or improper installation method.
★Solution: Each toilet must undergo a flushing function test one by one before leaving the factory.

If you are interested in our products, please feel free to inquire about our other bathroom products with different functions.
FAQ
Q: What is the flushing method of this toilet?
A: This toilet uses a single flush method, which is simple and reliable for daily use.
Q: Does this product have any certifications?
A: Yes, it is certified with cUPC and Watersense, ensuring it meets high standards for safety and water efficiency.
Q: What is the overall size of the toilet?
A: The overall dimensions are 680mm L x 418mm W x 734mm H, making it suitable for various bathroom layouts.
Q: What is the roughing-in size?
A: The toilet requires a 305mm (12") roughing-in size, which is a standard measurement for many installations.
Q: What is the water consumption rate?
A: It is a high-efficiency model with a water consumption rate of 1.28 gpf (4.8Lpf), helping to save water and reduce utility bills.



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