This video, titled "Crafting Luxury The Secrets Behind China's Exquisite Porcelain" by the Miracle Process channel, offers a comprehensive, step-by-step look into the manufacturing facility of Shenzhen Guoci Yongfengyuan Porcelain Industry Co., Ltd. Established in 1795 during the Qing Dynasty, this enterprise represents five g
enerations of ceramic craftsmanship. Known as the "Modern Official Kiln," it produces over 30 million pieces annually, including household, gift, hotel, and collectible porcelain used in major national events like the G20 Hangzhou Summit.
Below is a detailed breakdown of the complete manufacturing, testing, and finishing proce
ss showcased in the video.
1. Design & Material Preparation
Decal R&D Laboratory & Printing Workshop [00:37]: Designers create custom, intricate ceramic patterns and styles. These digital concepts are then transferred to the printing workshop where high-quality decals are produced.
Glaze & Slip Laboratories [01:56]: Engineers
test glaze formulas, monitor flow rates [05:59], and handle bulk preparation in the mixing grinders [04:23].
Raw Material Milling & Aging [06:08]: In the bone china grinding workshop, raw ingredients undergo ball milling, vibration screening, and mechanical filter pressing. The refined material is stored in underground slurry
tanks to age and stir [06:23].
2. Molding & Shaping Methods
The factory employs multiple methods to shape the clay depending on the specific product design:
+-----------------------------------+
| Raw Material Slurry |
+-----------------------------------+
|
+----------------------------+----------------------------+
| | |
v v v
[ Isostatic Pressing ] [ Slip Casting ] [ Jiggering Forming ]
|
| |
| Dry pressing of | Pouring slip into | Rotational shaping
| automated shapes | plaster molds for | for plates/bowls
| using SAMA machines | hollow items |
v v
v
+----------------------------+----------------------------+
|
v
[ Drying Ovens ]
Isostatic Pressing [07:42]: Utilizes high-tech German SAMA machinery for fully automated, high-pressure dry mo
lding of uniform items.
Plaster Mold Manufacturing & Slip Casting [08:47]: Artisans create plaster molds, insert vent rods for air-assisted demolding [09:23], and pour liquid slip directly into the molds [10:38]. Excess slip is drained to create hollow objects like specialty liquor bottles [10:47].
Jiggering Forming [13:34]: R
otary blades shape malleable clay against a rotating mold, a technique primarily used for circular tableware like plates and bowls.
3. Firing, Glazing, & Refinement
Bisque Firing [15:28]: The molded ceramics enter kilns for an initial bake between 980–1280°C. This hardens the ceramic body to prevent breakage during subsequent
handling.
Polishing & Washing [12:18], [16:50]: Post-bisque items are smoothed down and washed to ensure maximum adhesion for the glaze layer.
Glaze Spraying [17:25]: For complex pieces like liquor bottles, an open-flame heating system preheats the ceramic body to 100–120°C [18:21] before spraying, followed by a secondary heat
treatment to set the wet glaze.
High-Temperature Glaze Firing [19:44]: The glazed products are fired in a high-temperature kiln at temperatures exceeding 1300°C to achieve a glossy, glass-like protective finish.
4. Artistry, Quality Control, & Packaging
Decoration & Gold Tracing [21:05]: Specialized workers apply the manufact
ured decals onto the glossy porcelain. Following this, master artisans meticulously hand-paint intricate patterns using a gold paste containing genuine gold [22:54]. Each piece is inspected under specialized flashlights to verify line uniformity [23:58] before undergoing separate firings to permanently fuse the artwork.
Labora
tory Safety Testing [26:27]: Decal-adorned samples are soaked in a 4% industrial acetic acid solution to create a leachate. Technicians analyze this solution using an Atomic Absorption Spectrophotometer to guarantee that heavy metals, such as lead and cadmium, do not leach out of the decorated items.
Sorting & Dispatch [27:20]
: Items that do not meet strict quality thresholds are discarded. Flawless pieces are forwarded to the packing workshop [27:50] before distribution to over 500 retail storefronts nationwide [29:16].
URL: https://www.youtube.com/watch?v=WWxjG9NgF-w
Crafting Luxury The Secrets Behind China's Exquisite Porcelain
Miracle Process ·
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