Seller Checking
  • Goods
  • Brands
  • Package Tracking
  • AliExpress Seller Check
  • Sellers Rating
  • Shenzhen XINWANGJI E-Commerce Seller
  • Shenzhen XINWANGJI E-Commerce Goods

Shenzhen XINWANGJI E-Commerce Goods

1PCS Black Softness Phone Repair Glue S-7800 Phone LCD Touch Screen Panel laminating Adhesive Border Fissure Maintenance Sealant
Price: $4.5
Old Price: $6
1PCS Black Softness Phone Repair Glue S-7800 Phone LCD Touch Screen Panel laminating Adhesive Border Fissure Maintenance SealantSilicone Sealants China
Shenzhen XINWANGJI E-Commerce Company Store
0.55mm 250k lead-free for BGA reworking BGA reballing soldering balls
Price: $31.41
Old Price: $34.9
0.55mm 250k lead-free for BGA reworking BGA reballing soldering ballsWelding Accessories China
Shenzhen XINWANGJI E-Commerce Company Store
10pcs/lot MECHANIC XG-50 Solder Paste No-Clean For SMD BGA SMT Stencil Rework Welding Station Tool Repair Solder Soldering Flux
Price: $30.39
10pcs/lot MECHANIC XG-50 Solder Paste No-Clean For SMD BGA SMT Stencil Rework Welding Station Tool Repair Solder Soldering FluxSilicone Sealants
Shenzhen XINWANGJI E-Commerce Company Store
Hot Sale 10pcs DIY Solder Soldering Paste 10cc Flux Grease RMA-223 for Chips Computer Phone LED BGA SMD PGA PCB Repair Tool
Price: $7.55
Hot Sale 10pcs DIY Solder Soldering Paste 10cc Flux Grease RMA-223 for Chips Computer Phone LED BGA SMD PGA PCB Repair ToolSilicone Sealants
Shenzhen XINWANGJI E-Commerce Company Store
50ml A+B Structural Adhesive High Tenacity Glue Super Glue Quick Dry Transparent Metals Plastics Ceramics Glass Various Bonding
Price: $6.55
50ml A+B Structural Adhesive High Tenacity Glue Super Glue Quick Dry Transparent Metals Plastics Ceramics Glass Various BondingSilicone Sealants
Shenzhen XINWANGJI E-Commerce Company Store
5pcs/lot 559 10cc NC-559-ASM Flux paste lead-free solder paste solder flux + Needles
Price: $6.5
Old Price: $6.84
5pcs/lot 559 10cc NC-559-ASM Flux paste lead-free solder paste solder flux + NeedlesSilicone Sealants China
Shenzhen XINWANGJI E-Commerce Company Store
20pcs/lot MECHANIC XG50 Liquid Solder Paste 42g SN63 Pb37 Solder Soldering Flux For SMD BGA SMT Stencil Welding Rework Station
Price: $56.08
20pcs/lot MECHANIC XG50 Liquid Solder Paste 42g SN63 Pb37 Solder Soldering Flux For SMD BGA SMT Stencil Welding Rework StationSilicone Sealants China
Shenzhen XINWANGJI E-Commerce Company Store
NT ZJ-18 150g Yellow paste Advance Quality Solder Flux Soldering Paste High Intensity Free Rosin
Price: $5.35
NT ZJ-18 150g Yellow paste Advance Quality Solder Flux Soldering Paste High Intensity Free RosinSilicone Sealants
Shenzhen XINWANGJI E-Commerce Company Store
KORAD KA3005D high precision Adjustable Digital DC Power Supply 4Ps mA 30V/5A for scientific research service Laboratory
Price: $101.49
KORAD KA3005D high precision Adjustable Digital DC Power Supply 4Ps mA 30V/5A for scientific research service LaboratorySurge Protectors
Shenzhen XINWANGJI E-Commerce Company Store
BES A-900M-T I IS Lead Free Fine Soldering Tip High Quality Fly Line Dedicated Iron Head For 936 Solder Station PCB BGA Welding
Price: $4.8
Old Price: $6
BES A-900M-T I IS Lead Free Fine Soldering Tip High Quality Fly Line Dedicated Iron Head For 936 Solder Station PCB BGA WeldingElectric Soldering Irons China
Shenzhen XINWANGJI E-Commerce Company Store
CXG 968 Mini Portable Soldering Iron Intelligent Adjustable Constant Temperature Sleep Function LED Display Portable Weld Tool
Price: $23.83
CXG 968 Mini Portable Soldering Iron Intelligent Adjustable Constant Temperature Sleep Function LED Display Portable Weld ToolElectric Soldering Irons
Shenzhen XINWANGJI E-Commerce Company Store
ProsKit Desoldering Pump Suction Tin Gun Soldering Sucker Pen Removal Vacuum Soldering Iron Desolder Hand Welding Tools
Price: $6.58
ProsKit Desoldering Pump Suction Tin Gun Soldering Sucker Pen Removal Vacuum Soldering Iron Desolder Hand Welding ToolsSolder Suction China
Shenzhen XINWANGJI E-Commerce Company Store
1 Bottle MECHANICBGA IC Adhesive Glue Removing Epoxy Remover Cell Phone CPU Chip Cleaner 20ml BGA-IC Repair Remove Liquid Tool
Price: $8.14
Old Price: $9.05
1 Bottle MECHANICBGA IC Adhesive Glue Removing Epoxy Remover Cell Phone CPU Chip Cleaner 20ml BGA-IC Repair Remove Liquid ToolWelding Accessories
Shenzhen XINWANGJI E-Commerce Company Store
5CC Transparent/Black PPS Structural Adhesive 20 Mins Curing High Strength Glue Metals Plastics Ceramics Glass Various Bonding
Price: $5.52
Old Price: $6.5
5CC Transparent/Black PPS Structural Adhesive 20 Mins Curing High Strength Glue Metals Plastics Ceramics Glass Various BondingSilicone Sealants
Shenzhen XINWANGJI E-Commerce Company Store
1PCS B-7000 110ML Adhesive Multi Purpose Jewelery Epoxy Resin Diy Jewelry Crafts Glass Touch Screen Cell Phone Repair
Price: $6.23
Old Price: $7.79
1PCS B-7000 110ML Adhesive Multi Purpose Jewelery Epoxy Resin Diy Jewelry Crafts Glass Touch Screen Cell Phone RepairSilicone Sealants China
Shenzhen XINWANGJI E-Commerce Company Store
50pcs/lot 10CC RMA-223 Professional Mechanic Solder Soldering Paste Grease Syringe Of Flux Gel Welding Oil PC Phone Repair Tool
Price: $31.36
50pcs/lot 10CC RMA-223 Professional Mechanic Solder Soldering Paste Grease Syringe Of Flux Gel Welding Oil PC Phone Repair ToolSilicone Sealants
Shenzhen XINWANGJI E-Commerce Company Store
10PCS 900M-T-IS Soldering Iron Tip For Hakko Saike Aoyue Lucky BAKU Quick 936 852 Soldering Tips For Soldering Iron
Price: $5.31
Old Price: $5.9
10PCS 900M-T-IS Soldering Iron Tip For Hakko Saike Aoyue Lucky BAKU Quick 936 852 Soldering Tips For Soldering IronSoldering Iron Tips
Shenzhen XINWANGJI E-Commerce Company Store
CXG A1316/A1326 110V/220V 60W Ceramic Heater Heating Element Adapter DS60T/DS60S Soldering Iron Stand Heating
Price: $5.11
Old Price: $5.68
CXG A1316/A1326 110V/220V 60W Ceramic Heater Heating Element Adapter DS60T/DS60S Soldering Iron Stand HeatingElectric Soldering Irons
Shenzhen XINWANGJI E-Commerce Company Store
Phone Screen Polishing Agent 5g LCD Screen Repair Cream For Phone MP3 Screen Scratch Repair Paste + 5 pcs Clean Wipe Dust Cloth
Price: $9.19
Old Price: $11.5
Phone Screen Polishing Agent 5g LCD Screen Repair Cream For Phone MP3 Screen Scratch Repair Paste + 5 pcs Clean Wipe Dust ClothSilicone Sealants
Shenzhen XINWANGJI E-Commerce Company Store
KORAD KA6005D -Precision Variable Adjustable 60V, 5A DC Linear Power Supply Digital Regulated Lab Grade
Price: $189.14
KORAD KA6005D -Precision Variable Adjustable 60V, 5A DC Linear Power Supply Digital Regulated Lab GradeSurge Protectors
Shenzhen XINWANGJI E-Commerce Company Store
ADT-06 30W 220V Automatic Absorb Gun Suction Tin Device Electric Pump Suction Tin For Chip Motherboard Repairing Desoldering Gun
Price: $6.75
ADT-06 30W 220V Automatic Absorb Gun Suction Tin Device Electric Pump Suction Tin For Chip Motherboard Repairing Desoldering GunSolder Suction
Shenzhen XINWANGJI E-Commerce Company Store
10PCS 900M-T-3C Soldering Iron Tip For Hakko Saike Aoyue Lucky BAKU Quick 936 852 Soldering Tips For Soldering Iron
Price: $5.31
Old Price: $5.9
10PCS 900M-T-3C Soldering Iron Tip For Hakko Saike Aoyue Lucky BAKU Quick 936 852 Soldering Tips For Soldering IronSoldering Iron Tips
Shenzhen XINWANGJI E-Commerce Company Store
Constant Temperature Electric Soldering Irons Soldering Handle For BK-938 Mini Soldering Station For SMD SMT DIP Soldering
Price: $5.92
Old Price: $7.4
Constant Temperature Electric Soldering Irons Soldering Handle For BK-938 Mini Soldering Station For SMD SMT DIP SolderingElectric Soldering Irons
Shenzhen XINWANGJI E-Commerce Company Store
120V 3A DC Regulated Power High Precision Adjustable Supply Switch Power Supply Maintenance Protection Function KPS1203D
Price: $81.45
Old Price: $101.81
120V 3A DC Regulated Power High Precision Adjustable Supply Switch Power Supply Maintenance Protection Function KPS1203DSwitching Power Supplies China
Shenzhen XINWANGJI E-Commerce Company Store
Infrared Rework Reflow Soldering Station BGA SMD SMT desoldering Rework Station PUHUI T-862
Price: $155.16
Infrared Rework Reflow Soldering Station BGA SMD SMT desoldering Rework Station PUHUI T-862Electric Soldering Irons China
Shenzhen XINWANGJI E-Commerce Company Store
Tp-2500 50G UV Glue LOCA Liquid Optical Clear Adhesive for iPhone Samsung HTC Glass Repair
Price: $5.34
Old Price: $6.68
Tp-2500 50G UV Glue LOCA Liquid Optical Clear Adhesive for iPhone Samsung HTC Glass RepairSilicone Sealants
Shenzhen XINWANGJI E-Commerce Company Store
2pcs RMA-223 Lead-free Solder Soldering Paste 10cc Flux Grease For Chips Computer Phone LED BGA SMD PGA PCB Repair Tool
Price: $4.05
Old Price: $4.5
2pcs RMA-223 Lead-free Solder Soldering Paste 10cc Flux Grease For Chips Computer Phone LED BGA SMD PGA PCB Repair ToolWelding Accessories
Shenzhen XINWANGJI E-Commerce Company Store
120V 1A DC Regulated Power High Precision Adjustable Supply Switch Power Supply Maintenance Protection Function KPS1201D
Price: $83.36
120V 1A DC Regulated Power High Precision Adjustable Supply Switch Power Supply Maintenance Protection Function KPS1201DSwitching Power Supplies
Shenzhen XINWANGJI E-Commerce Company Store
2pcs/lot MECHANIC BGA Soldering Flux Paste RMA-UV10 Halogen-Free Paste For Soldering Iron SMT Rework Flux 10cc With Free Needle
Price: $7
2pcs/lot MECHANIC BGA Soldering Flux Paste RMA-UV10 Halogen-Free Paste For Soldering Iron SMT Rework Flux 10cc With Free NeedleWelding Accessories China
Shenzhen XINWANGJI E-Commerce Company Store
1Pcs High Quality Rosin Core Fine Solder Wire 0.3mm/0.4mm/0.5mm/0.6mm 50g Wear-Resisting Low Melting Point Welding Wire Tin line
Price: $4.32
Old Price: $4.8
1Pcs High Quality Rosin Core Fine Solder Wire 0.3mm/0.4mm/0.5mm/0.6mm 50g Wear-Resisting Low Melting Point Welding Wire Tin lineWelding Wire China
Shenzhen XINWANGJI E-Commerce Company Store
5PCS KINGBO RMA-218 10cc Flux Paste/BGA flux paste for BGA solder station Soldering Tin Cream
Price: $7.33
Old Price: $8.15
5PCS KINGBO RMA-218 10cc Flux Paste/BGA flux paste for BGA solder station Soldering Tin CreamSilicone Sealants
Shenzhen XINWANGJI E-Commerce Company Store
Silver Single Adhesive Conductive Cloth Tape 5mm~18mm Choose 20M Anti-Electromagnetic Interference EMI Shielding Phone PC Cable
Price: $4.09
Old Price: $4.55
Silver Single Adhesive Conductive Cloth Tape 5mm~18mm Choose 20M Anti-Electromagnetic Interference EMI Shielding Phone PC CableAdhesive Tapes
Shenzhen XINWANGJI E-Commerce Company Store
0.45mm 250K/BT Leaded Solder Ball,Solder Sphere,BGA Solder Ball for BGA Chip Reballing
Price: $15.29
0.45mm 250K/BT Leaded Solder Ball,Solder Sphere,BGA Solder Ball for BGA Chip ReballingWelding Accessories
Shenzhen XINWANGJI E-Commerce Company Store
Free Shipping 6pcs/lot Round BGA Nozzle 3/4/5/8/10/12mm universal 858 BGA soldering station HOT AIR GUN for AOYUE ATTEN SAIKE
Price: $6.08
Old Price: $8.68
Free Shipping 6pcs/lot Round BGA Nozzle 3/4/5/8/10/12mm universal 858 BGA soldering station HOT AIR GUN for AOYUE ATTEN SAIKEWelding Nozzles
Shenzhen XINWANGJI E-Commerce Company Store
Heat Resistant Double-sided Transparent Clear Adhesive Tape 50M 8MM width Long Multi-role
Price: $5.44
Old Price: $6.05
Heat Resistant Double-sided Transparent Clear Adhesive Tape 50M 8MM width Long Multi-roleAdhesive Tapes
Shenzhen XINWANGJI E-Commerce Company Store
ASG102 Automotive Signal Generator Voltage Frequency Signal Source Car Diagnostic Instrument 2 Channels Waveform Signal Output
Price: $122.39
ASG102 Automotive Signal Generator Voltage Frequency Signal Source Car Diagnostic Instrument 2 Channels Waveform Signal OutputSignal Generators
Shenzhen XINWANGJI E-Commerce Company Store
5pcs RMA-223 PCB SMD Soldering Paste needle type Flux Grease For Chips Computer Phone LED BGA SMD PGA PCB DIY Repair Tool
Price: $7.24
5pcs RMA-223 PCB SMD Soldering Paste needle type Flux Grease For Chips Computer Phone LED BGA SMD PGA PCB DIY Repair ToolWelding Accessories
Shenzhen XINWANGJI E-Commerce Company Store
5pcs/lot Computer Cooling Heat Silicone HT-GY260 Thermal Paste Silicone Grey Paste For CPU PC Diode Thermal Conductive Paste
Price: $7.33
Old Price: $9.16
5pcs/lot Computer Cooling Heat Silicone HT-GY260 Thermal Paste Silicone Grey Paste For CPU PC Diode Thermal Conductive PasteWelding Accessories China
Shenzhen XINWANGJI E-Commerce Company Store
19mm~28mm Wide Choose 66M Long/roll Yellow Adhesive Insulation Tape for Transformer Motor Capacitor Coil Wrap Anti-Flame
Price: $4.93
Old Price: $5.48
19mm~28mm Wide Choose 66M Long/roll Yellow Adhesive Insulation Tape for Transformer Motor Capacitor Coil Wrap Anti-FlameAdhesive Tapes China
Shenzhen XINWANGJI E-Commerce Company Store
10PCS 900M-T-2C Soldering Iron Tip For Hakko Saike Aoyue Lucky BAKU Quick 936 852 Soldering Tips For Soldering Iron
Price: $5.31
Old Price: $5.9
10PCS 900M-T-2C Soldering Iron Tip For Hakko Saike Aoyue Lucky BAKU Quick 936 852 Soldering Tips For Soldering IronSoldering Iron Tips
Shenzhen XINWANGJI E-Commerce Company Store
HT-GY260 Thermal Paste Silicone Grey Paste Computer Cooling Silicone For PC And Laptop CPU Diode Heat Dissipation Silica Gel
Price: $3.84
Old Price: $4.8
HT-GY260 Thermal Paste Silicone Grey Paste Computer Cooling Silicone For PC And Laptop CPU Diode Heat Dissipation Silica GelWelding Accessories China
Shenzhen XINWANGJI E-Commerce Company Store
2pcs 50g 705 Silicone Waterproof Clear Heat Resisting Sealing Glue For Electron Component PCB Appropriative Glass Plastic Curing
Price: $7.07
Old Price: $8.02
2pcs 50g 705 Silicone Waterproof Clear Heat Resisting Sealing Glue For Electron Component PCB Appropriative Glass Plastic CuringSilicone Sealants China
Shenzhen XINWANGJI E-Commerce Company Store
1 Roll 20m Plain Weave Conductive Adhesive Single Side Adhesive Both Sides for Phone Notebook Computer LCD EMI Shielding Repair
Price: $5.4
Old Price: $6
1 Roll 20m Plain Weave Conductive Adhesive Single Side Adhesive Both Sides for Phone Notebook Computer LCD EMI Shielding RepairAdhesive Tapes
Shenzhen XINWANGJI E-Commerce Company Store
CXG A13211/A13111 220V/110V Heating Element A13211 For AB-F GS110D CXG DS110 DS110T DS110S Soldering Iron Heating Replacement
Price: $7.92
Old Price: $8.8
CXG A13211/A13111 220V/110V Heating Element A13211 For AB-F GS110D CXG DS110 DS110T DS110S Soldering Iron Heating ReplacementElectric Soldering Irons
Shenzhen XINWANGJI E-Commerce Company Store
0.5mm Solder Sphere 250K/BT Leaded Solder Ball,BGA Solder Ball for BGA Chip Reballing
Price: $16.11
Old Price: $17.89
0.5mm Solder Sphere 250K/BT Leaded Solder Ball,BGA Solder Ball for BGA Chip ReballingWelding Accessories
Shenzhen XINWANGJI E-Commerce Company Store
BST-102C Portable Temperature Adjustable Welding Electric Soldering Iron with Switch SMD Welding Rework Tool
Price: $14.58
BST-102C Portable Temperature Adjustable Welding Electric Soldering Iron with Switch SMD Welding Rework ToolElectric Soldering Irons
Shenzhen XINWANGJI E-Commerce Company Store
JDS2012A Handheld Digital Oscilloscope + Multimeter 4000 Counts 20MHz Bandwidth Electrician Circuit Auto Electrical Maintenance
Price: $100
Old Price: $125
JDS2012A Handheld Digital Oscilloscope + Multimeter 4000 Counts 20MHz Bandwidth Electrician Circuit Auto Electrical MaintenanceOscilloscopes
Shenzhen XINWANGJI E-Commerce Company Store
10PCS 900M-T-B Soldering Iron Tip For Hakko Saike Aoyue Lucky BAKU Quick 936 852 Soldering Tips For Soldering Iron
Price: $5.31
Old Price: $5.9
10PCS 900M-T-B Soldering Iron Tip For Hakko Saike Aoyue Lucky BAKU Quick 936 852 Soldering Tips For Soldering IronSoldering Iron Tips China
Shenzhen XINWANGJI E-Commerce Company Store
AEF Structural Adhesive Suitable for Mobile Phone Screen Bezel Adhesive Apple Support Back Cover Gum Quick Solidification
Price: $11.51
Old Price: $15.35
AEF Structural Adhesive Suitable for Mobile Phone Screen Bezel Adhesive Apple Support Back Cover Gum Quick SolidificationSilicone Sealants
Shenzhen XINWANGJI E-Commerce Company Store
10PCS CXG C9 Series Soldering Station Sting Nozzles Soldering Solder Iron Tip For CXG DS60S DS90S DS110S DT70S
Price: $18.6
Old Price: $21.88
10PCS CXG C9 Series Soldering Station Sting Nozzles Soldering Solder Iron Tip For CXG DS60S DS90S DS110S DT70SSoldering Iron Tips
Shenzhen XINWANGJI E-Commerce Company Store
2pcs/lot BGA Aluminum adhesive Tape 20mm*20m*0.09mm Heat Resistant Sealing tape
Price: $6.29
Old Price: $6.99
2pcs/lot BGA Aluminum adhesive Tape 20mm*20m*0.09mm Heat Resistant Sealing tapeAdhesive Tapes China
Shenzhen XINWANGJI E-Commerce Company Store
CXG 90W A1329/A1319 Heating Element Heater Thermostatic Electric Soldering Iron For DS90T DS90S GS90D
Price: $6.75
Old Price: $7.5
CXG 90W A1329/A1319 Heating Element Heater Thermostatic Electric Soldering Iron For DS90T DS90S GS90DElectric Soldering Irons
Shenzhen XINWANGJI E-Commerce Company Store
5mm~21mm Choose*30 Meter Adhesive Insulate Acetate Cloth Tape Sticky for Laptop/PC/Fan/Monitor Screen/Motor Wire Wrap
Price: $4.07
Old Price: $4.51
5mm~21mm Choose*30 Meter Adhesive Insulate Acetate Cloth Tape Sticky for Laptop/PC/Fan/Monitor Screen/Motor Wire WrapAdhesive Tapes China
Shenzhen XINWANGJI E-Commerce Company Store
50M Single Surface Conductive Copper Foil Tape Pure Copper Radiation Protection High Temperature Resistant Copper Foil Tape
Price: $5.4
Old Price: $6
50M Single Surface Conductive Copper Foil Tape Pure Copper Radiation Protection High Temperature Resistant Copper Foil TapeAdhesive Tapes
Shenzhen XINWANGJI E-Commerce Company Store
High quality Clear Adhesive Sealant Glue E8000 50ml for DIY Diamond Clothes Shoes Paste Jewelry Craft
Price: $4.95
High quality Clear Adhesive Sealant Glue E8000 50ml for DIY Diamond Clothes Shoes Paste Jewelry CraftSilicone Sealants
Shenzhen XINWANGJI E-Commerce Company Store
Backlight LCD Fit Into The UV Glue (Special Glue Seal The Border) LCD Frame Sealant
Price: $6.79
Old Price: $7.55
Backlight LCD Fit Into The UV Glue (Special Glue Seal The Border) LCD Frame SealantSilicone Sealants
Shenzhen XINWANGJI E-Commerce Company Store
0.1*2mm battery tabs nickel plate nickel tape for 18650 cell /battery repairing 1kg
Price: $39.24
Old Price: $43.6
0.1*2mm battery tabs nickel plate nickel tape for 18650 cell /battery repairing 1kgWelding Wire
Shenzhen XINWANGJI E-Commerce Company Store
KA6002D quality High Precision programmable Variable Adjustable Digital Regulated power supply DC Power Supply 60V/2A mv mA
Price: $63.77
KA6002D quality High Precision programmable Variable Adjustable Digital Regulated power supply DC Power Supply 60V/2A mv mASurge Protectors
Shenzhen XINWANGJI E-Commerce Company Store
Aluminum Foil Tape 20mm*40m Aluminum Adhesive Tape 5pcs/lot High Temperature Tape Slivery
Price: $24.75
Old Price: $27.5
Aluminum Foil Tape 20mm*40m Aluminum Adhesive Tape 5pcs/lot High Temperature Tape SliveryAdhesive Tapes
Shenzhen XINWANGJI E-Commerce Company Store
5pcs/lot Heatshield Tape 10mm*40m Slivery BGA Aluminum Foil Tape High Temperature Tape
Price: $12.15
Old Price: $13.5
5pcs/lot Heatshield Tape 10mm*40m Slivery BGA Aluminum Foil Tape High Temperature TapeAdhesive Tapes
Shenzhen XINWANGJI E-Commerce Company Store
  • Show More →
  • Page 1
  • …
  • Page 4
  • Page 5
  • Page 6
  • Page 7
  • Page 8
  • Page 9
  • Page 10
  • Page 11
  • Page 12
  • Page 13
  • Page 14
  • Page 15
  • Page 16
Rubrics
  • Laser Levels
  • Men's Jackets
  • Womens's Jackets
  • Cell Phones
  • Fishing Goods
  • Clothes For Pregnant
  • Decorative Cosmetics
2017 © SellerChecking.com
Seller Check
Best Product April 2022
Package Tracking
AEP Sellers: 224 278, Goods: 65 537 575, Brands: 66 144  |  在速卖通上促销