Who we are
Since 1997, we have built leather machinery for modern tanneries, supported by in-house engineering and precision manufacturing, with a product range centered on vacuum dryers, staking machines, and related processing equipment.
Why Tanneries Choose SREE
1997
Building leather machinery since
ISO 9001
Certified quality management system
In-house
CNC machining of key parts
1 year
Standard warranty
Our Core Expertise
SREE focuses on the key tannery stages where machine performance directly affects quality, yield, and production consistency.
Wet-Blue Processing
Wet-Blue Preparation Machines
Prepared for cleaner, steadier flow.
Featured Model: GQRY2 / GFJZ-3200A
Drying
Low-Temp Vacuum Dryers
Low-temperature drying with better control.
Featured Model: GGZK-LT
Staking
Vibration Staking
Softness and consistency in every pass.
Featured Model: GLRZ
Engineered to Support High-Volume Leather Production
Helping tanneries scale production with greater stability, efficiency, and consistency.
Why SREE Quality Means Stability
From ductile iron staking links to stainless steel vacuum plates, SREE manufactures key components in-house using advanced CNC machining centers for greater precision, durability, and long-cycle reliability.
- In-House CNC Machining
- Heat-Treated Durability
- Long-Cycle Reliability
SREE company film
Our factory in Rugao and our machines in tannery production — fleshing, samming, sorting, vacuum drying, staking, stacking and ironing. 8½ minutes, English subtitles.
Our machines at work in customer tanneries
Vacuum dryers, staking, samming and stacking machines in daily production at tanneries in Uzbekistan, Tajikistan, Japan, Vietnam, Turkey and Ethiopia. Filmed by our service team in 2021; captions in Chinese.
Credentials you can check
Every certificate below has a number you can verify with the issuing body. CE certificates can be checked at udem.com.tr under the name Nantong Sirui Engineering Co., Ltd.
CE — Vibration staking machines (GLRZ 4-, 6- and 8-row, B/C series)UDEM (EU notified body), 2006/42/EC Machinery Directive, EN ISO 12100 · EN 60204-1
CE — Through-feed samming machines (GJS3 / GJS4 / GJS5 / GJS7, 1600–3400 mm)UDEM (EU notified body), 2006/42/EC Machinery Directive, EN ISO 12100 · EN 60204-1
ISO 9001:2015 quality managementZAZH certification centre — scope: development and production of leather machinery
ISO 14001:2015 environmental managementZAZH certification centre
ISO 45001:2018 occupational health & safetyZAZH certification centre
We wrote the standard
SREE is the sole drafting organisation of China's industry standard QB/T 2010—2011 "Leather machines — Vibration staking machine" (in force since 1 July 2012).
Top 10 in China's leather industry
Named one of the Top 10 enterprises of the China light industry leather sector (2016), and a science and technology demonstration enterprise of China's leather and footwear industry (2019).
National "Little Giant"
Recognised by China's Ministry of Industry and Information Technology as a specialised and innovative "Little Giant" enterprise (2022, re-confirmed 2025).
Certifications & Recognition
SREE operates with certified management systems and recognized quality standards.
ISO 9001 Quality Certificate
ISO 14001 Environmental Certificate
Nantong City Quality Model Enterprise
IP Management Certificate
Your Manufacturing Partner for Complete Tannery Lines
From single machines to full-line projects, SREE supports tannery production with reliable integration, predictable delivery, and long-term technical support.
