I need 2-ton trolley jacks with these specifications:  
- Built-in internal safety valve and vent plug  
- Swivel saddle design for safer positioning  
- 70mm to 630mm lifting height range  
- Rugged universal joint mechanism  
Must handle 2-ton load capacity. Looking for reliable suppliers who can meet these technical requirements.

We need 3 units of 10-ton pumping jack for oilfield operations. Required specifications:
- Voltage: 380V
- Power configuration: Please recommend optimal power specifications

Require detailed quotation showing:
1. Budget-friendly option with component specifications
2. High-end option with premium component details
3. Clear comparison highlighting quality differences between options

Prefer CYJ series models. No specific delivery time constraints mentioned yet.

Ability to offer PIN PRESS TANK WITHOUT JACK, HYDRAULIC CHAIN LINK PIN PRESS TANK WITH JACK FOR HEAVY DUTY LIMESTONE APRON FEEDERS CHINESE BRAND 100 TON. Have no idea of price. Ask for email and wechat

There is an enquiry for :=Shunting Locomotive with traction 1,000 tons-Wheel Gauge : 1,000 mm.-Rail Wheel : Solid Steel Wheel-Drive System :  4x4 ( All Wheels Propelled )-Brake : 2 x Electric Magnetic Disc Brake-Seat : On the shunter – chair pointing in 1 direction ,access from both sides-Control : 2 functions ; direct drive at control desk in the cab and remote control                     portable with strap more than 250 meters reach transmitter   receiver,                     charger-Design : Strong and low steel structure from profiles and steel sheets, 10-30 mm.                frame with support area for jacks and with 4 hoks on top for easy lifting-Lubricants : Mineral Oils, first oil fill included-Painting : Yellow RAL 1028 with 3 layer paint system industrial coating, total thickness                   225-300 micron. 4 pcs. Corner making colour   Black stripes-Pre