Deman Customers Case Study

Textile Industry

Hardware Industry

Plastics Industry

Automotive Parts

Textile Industry

Ningbo Aijian Bearing Co., Ltd.

This is a factory with a 25-year history. In April last year, the customer learned that Deman offers heat recovery retrofit services and reached out to us. Through the retrofit, they are now saving RMB 80,000 in electricity costs annually, which amounts to RMB 800,000 over 10 years.

2025-02-26

A Tool Manufacturing Company in Ningbo

The company, based in Ningbo, specializes in manufacturing hardware tools, saw blades, and machinery. During market development, the Deman team identified the company's challenges in compressed air usage and provided a customized solution covering air pressure, air volume, and air quality. This system-level service significantly improved their production efficiency, resulting in annual energy savings of approximately 163,800 kWh.

2025-01-22

Cixi Changge Electrical Accessories Co., Ltd

Changge specializes in electrical parts, hardware, and plastic products. Compressed air is mainly used for punching and automated assembly. It has been using Deman products for over a decade. Deman provided a plant-wide energy-saving compressed air solution based on the six-end application, and built a "Class 1 Energy Efficiency Compressed Air Station" for Changge, bringing significant energy savings.

2023-04-08

Zhejiang Ouluntai Fire Protection Equipment Co., Ltd.

Ouluntai Fire Protection Equipment Co., Ltd. is a leading benchmark enterprise in China’s fire extinguisher manufacturing industry. Their main compressed air applications are in hardware stamping, metal processing, and surface treatment. Deman built the first "Class 1 Energy Efficiency Compressed Air Station" in China’s fire protection equipment industry for Ouluntai, exceeding the Class 1 standard by 7.8%, achieving an annual electricity savings of 250,000 kWh.

2023-03-13

Since 1998, our mission is to create infinite value for clients through efficient use of compressed air.

Website

News About Deman

Contact us

Ningbo Address: No. 188 Yueci Road, Cixi, Zhejiang, China

Hangzhou Address: No. 1407, 14th Floor, UDC Starlight Times, Wentao Road,
Binjiang District, Hangzhou, Zhejiang, China

Shenzhen 367-6 Guangshen Road, Xiner Community, Xinqiao Street,
Baoan District, Shenzhen, China

基本文件流程错误 SQL 调试

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[ DB ] CONNECT:[ UseTime:0.001482s ] mysql:host=127.0.0.1;port=3306;dbname=deman;charset=utf8mb4
[ SQL ] SHOW COLUMNS FROM `en_portal_category` [ RunTime:0.001165s ]
[ SQL ] SELECT * FROM `en_portal_category` WHERE `status` = 1 AND `parent_id` = 0 ORDER BY `list_order` ASC [ RunTime:0.001049s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'en_portal_category', 'partitions' => NULL, 'type' => 'ALL', 'possible_keys' => NULL, 'key' => NULL, 'key_len' => NULL, 'ref' => NULL, 'rows' => 80, 'filtered' => 1.25, 'extra' => 'Using where; Using filesort', ) ]
[ SQL ] SELECT * FROM `en_portal_category` WHERE `parent_id` = 1 AND `status` = 1 ORDER BY `list_order` ASC [ RunTime:0.000880s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'en_portal_category', 'partitions' => NULL, 'type' => 'ALL', 'possible_keys' => NULL, 'key' => NULL, 'key_len' => NULL, 'ref' => NULL, 'rows' => 80, 'filtered' => 1.25, 'extra' => 'Using where; Using filesort', ) ]
[ SQL ] SELECT * FROM `en_portal_category` WHERE `parent_id` = 2 AND `status` = 1 ORDER BY `list_order` ASC [ RunTime:0.001104s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'en_portal_category', 'partitions' => NULL, 'type' => 'ALL', 'possible_keys' => NULL, 'key' => NULL, 'key_len' => NULL, 'ref' => NULL, 'rows' => 80, 'filtered' => 1.25, 'extra' => 'Using where; Using filesort', ) ]
[ SQL ] SELECT * FROM `en_portal_category` WHERE `parent_id` = 3 AND `status` = 1 ORDER BY `list_order` ASC [ RunTime:0.001245s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'en_portal_category', 'partitions' => NULL, 'type' => 'ALL', 'possible_keys' => NULL, 'key' => NULL, 'key_len' => NULL, 'ref' => NULL, 'rows' => 80, 'filtered' => 1.25, 'extra' => 'Using where; Using filesort', ) ]
[ SQL ] SELECT * FROM `en_portal_category` WHERE `parent_id` = 4 AND `status` = 1 ORDER BY `list_order` ASC [ RunTime:0.000824s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'en_portal_category', 'partitions' => NULL, 'type' => 'ALL', 'possible_keys' => NULL, 'key' => NULL, 'key_len' => NULL, 'ref' => NULL, 'rows' => 80, 'filtered' => 1.25, 'extra' => 'Using where; Using filesort', ) ]
[ SQL ] SELECT * FROM `en_portal_category` WHERE `parent_id` = 43 AND `status` = 1 ORDER BY `list_order` ASC [ RunTime:0.000779s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'en_portal_category', 'partitions' => NULL, 'type' => 'ALL', 'possible_keys' => NULL, 'key' => NULL, 'key_len' => NULL, 'ref' => NULL, 'rows' => 80, 'filtered' => 1.25, 'extra' => 'Using where; Using filesort', ) ]
[ SQL ] SELECT * FROM `en_portal_category` WHERE `parent_id` = 85 AND `status` = 1 ORDER BY `list_order` ASC [ RunTime:0.001439s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'en_portal_category', 'partitions' => NULL, 'type' => 'ALL', 'possible_keys' => NULL, 'key' => NULL, 'key_len' => NULL, 'ref' => NULL, 'rows' => 80, 'filtered' => 1.25, 'extra' => 'Using where; Using filesort', ) ]
[ SQL ] SELECT * FROM `en_portal_category` WHERE `id` = 35 AND `status` = 1 LIMIT 1 [ RunTime:0.000941s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'en_portal_category', 'partitions' => NULL, 'type' => 'const', 'possible_keys' => 'PRIMARY', 'key' => 'PRIMARY', 'key_len' => '8', 'ref' => 'const', 'rows' => 1, 'filtered' => 100, 'extra' => NULL, ) ]
[ SQL ] SHOW COLUMNS FROM `en_portal_post` [ RunTime:0.001321s ]
[ SQL ] SELECT * FROM `en_portal_post` WHERE `classify_id` = '1' AND `id` = 2 AND `post_status` = 1 [ RunTime:0.001357s ]
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[ SQL ] SELECT * FROM `en_portal_category` WHERE `id` = 35 LIMIT 1 [ RunTime:0.001419s ]
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[ SQL ] SELECT * FROM `en_portal_category` WHERE `id` = 4 LIMIT 1 [ RunTime:0.001176s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'en_portal_category', 'partitions' => NULL, 'type' => 'const', 'possible_keys' => 'PRIMARY', 'key' => 'PRIMARY', 'key_len' => '8', 'ref' => 'const', 'rows' => 1, 'filtered' => 100, 'extra' => NULL, ) ]
[ SQL ] SHOW COLUMNS FROM `en_theme_file` [ RunTime:0.001495s ]
[ SQL ] SELECT * FROM `en_theme_file` WHERE `theme` = 'simpleboot3' AND `file` = 'portal/aaa' LIMIT 1 [ RunTime:0.000735s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'en_theme_file', 'partitions' => NULL, 'type' => 'ALL', 'possible_keys' => NULL, 'key' => NULL, 'key_len' => NULL, 'ref' => NULL, 'rows' => 2, 'filtered' => 50, 'extra' => 'Using where', ) ]
[ SQL ] UPDATE `en_theme_file` SET `theme`='simpleboot3',`action`='portal/List/index',`file`='portal/aaa',`name`='默认列表模板',`more`='[]',`config_more`='[]',`description`='aaa',`is_public`=0,`list_order`=10 WHERE `theme` = 'simpleboot3' AND `file` = 'portal/aaa' [ RunTime:0.001778s ]
[ SQL ] SELECT * FROM `en_theme_file` WHERE `theme` = 'simpleboot3' AND `file` = 'portal/aaa_detail' LIMIT 1 [ RunTime:0.001312s ]
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[ SQL ] UPDATE `en_theme_file` SET `theme`='simpleboot3',`action`='portal/Article/index',`file`='portal/aaa_detail',`name`='默认详情模板',`more`='[]',`config_more`='[]',`description`='aaa_detail',`is_public`=0,`list_order`=10 WHERE `theme` = 'simpleboot3' AND `file` = 'portal/aaa_detail' [ RunTime:0.001683s ]
[ SQL ] SELECT * FROM `en_theme_file` WHERE `theme` = 'simpleboot3' [ RunTime:0.000827s ]
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[ SQL ] SHOW COLUMNS FROM `en_theme` [ RunTime:0.001818s ]
[ SQL ] UPDATE `en_theme` SET `name`='simpleboot3',`version`='1.0.2',`demo_url`='http://demo.thinkcmf.com',`author`='ThinkCMF',`lang`='zh-cn',`author_url`='http://www.thinkcmf.com',`keywords`='ThinkCMF模板',`description`='ThinkCMF默认模板' WHERE `theme` = 'simpleboot3' [ RunTime:0.001655s ]
[ SQL ] SELECT `more` FROM `en_theme_file` WHERE `theme` = 'simpleboot3' AND ( `is_public` = 1 OR `file` = 'portal/case/index' ) [ RunTime:0.000930s ]
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[ SQL ] SHOW COLUMNS FROM `en_option` [ RunTime:0.001310s ]
[ SQL ] SELECT `option_value` FROM `en_option` WHERE `option_name` = 'storage' LIMIT 1 [ RunTime:0.001760s ]
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[ SQL ] SELECT COUNT(*) AS tp_count FROM ( SELECT count(*) FROM `en_portal_post` `post` INNER JOIN `en_portal_category_post` `category_post` ON `post`.`id`=`category_post`.`post_id` WHERE `post`.`post_status` = 1 AND `post`.`post_type` = 1 AND `post`.`delete_time` = 0 AND ( `category_post`.`category_id` = '35' ) AND ( `post`.`published_time` > '0' and `post`.`published_time` < 1754042014 ) GROUP BY `post`.`id` ) `_group_count_` LIMIT 1 [ RunTime:0.001499s ]
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[ SQL ] SELECT post.*,min(category_post.category_id) as category_id FROM `en_portal_post` `post` INNER JOIN `en_portal_category_post` `category_post` ON `post`.`id`=`category_post`.`post_id` WHERE `post`.`post_status` = 1 AND `post`.`post_type` = 1 AND `post`.`delete_time` = 0 AND ( `category_post`.`category_id` = '35' ) AND ( `post`.`published_time` > '0' and `post`.`published_time` < 1754042014 ) GROUP BY `post`.`id` ORDER BY `post`.`published_time` DESC LIMIT 0,9 [ RunTime:0.007814s ]
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